diff --git a/Spreadsheet/Excel/Writer/BIFFwriter.php b/Spreadsheet/Excel/Writer/BIFFwriter.php
index c949b45..57e1de9 100644
--- a/Spreadsheet/Excel/Writer/BIFFwriter.php
+++ b/Spreadsheet/Excel/Writer/BIFFwriter.php
@@ -57,51 +57,51 @@ class Spreadsheet_Excel_Writer_BIFFwriter extends PEAR
     * The BIFF/Excel version (5).
     * @var integer
     */
-    var $_BIFF_version = 0x0500;
+    public $_BIFF_version = 0x0500;
 
     /**
     * The byte order of this architecture. 0 => little endian, 1 => big endian
     * @var integer
     */
-    var $_byte_order;
+    public $_byte_order;
 
     /**
     * The string containing the data of the BIFF stream
     * @var string
     */
-    var $_data;
+    public $_data;
 
     /**
     * The size of the data in bytes. Should be the same as strlen($this->_data)
     * @var integer
     */
-    var $_datasize;
+    public $_datasize;
 
     /**
     * The maximun length for a BIFF record. See _addContinue()
     * @var integer
     * @see _addContinue()
     */
-    var $_limit;
+    public $_limit;
 
     /**
     * The temporary dir for storing the OLE file
     * @var string
     */
-    var $_tmp_dir;
+    public $_tmp_dir;
 
     /**
     * The temporary file for storing the OLE file
     * @var string
     */
-    var $_tmp_file;
+    public $_tmp_file;
 
     /**
     * Constructor
     *
     * @access public
     */
-    function Spreadsheet_Excel_Writer_BIFFwriter()
+    public function Spreadsheet_Excel_Writer_BIFFwriter()
     {
         $this->_byte_order = '';
         $this->_data       = '';
@@ -118,7 +118,7 @@ class Spreadsheet_Excel_Writer_BIFFwriter extends PEAR
     *
     * @access private
     */
-    function _setByteOrder()
+    protected function _setByteOrder()
     {
         // Check if "pack" gives the required IEEE 64bit float
         $teststr = pack("d", 1.2345);
@@ -136,12 +136,12 @@ class Spreadsheet_Excel_Writer_BIFFwriter extends PEAR
     }
 
     /**
-    * General storage function
+    * General storage public function
     *
     * @param string $data binary data to prepend
     * @access private
     */
-    function _prepend($data)
+    protected function _prepend($data)
     {
         if (strlen($data) > $this->_limit) {
             $data = $this->_addContinue($data);
@@ -151,12 +151,12 @@ class Spreadsheet_Excel_Writer_BIFFwriter extends PEAR
     }
 
     /**
-    * General storage function
+    * General storage public function
     *
     * @param string $data binary data to append
     * @access private
     */
-    function _append($data)
+    protected function _append($data)
     {
         if (strlen($data) > $this->_limit) {
             $data = $this->_addContinue($data);
@@ -173,7 +173,7 @@ class Spreadsheet_Excel_Writer_BIFFwriter extends PEAR
     *                       0x0010 Worksheet.
     * @access private
     */
-    function _storeBof($type)
+    protected function _storeBof($type)
     {
         $record  = 0x0809;        // Record identifier
 
@@ -202,7 +202,7 @@ class Spreadsheet_Excel_Writer_BIFFwriter extends PEAR
     *
     * @access private
     */
-    function _storeEof()
+    protected function _storeEof()
     {
         $record    = 0x000A;   // Record identifier
         $length    = 0x0000;   // Number of bytes to follow
@@ -215,14 +215,14 @@ class Spreadsheet_Excel_Writer_BIFFwriter extends PEAR
     * Excel 97 the limit is 8228 bytes. Records that are longer than these limits
     * must be split up into CONTINUE blocks.
     *
-    * This function takes a long BIFF record and inserts CONTINUE records as
+    * This public function takes a long BIFF record and inserts CONTINUE records as
     * necessary.
     *
     * @param  string  $data The original binary data to be written
     * @return string        A very convenient string of continue blocks
     * @access private
     */
-    function _addContinue($data)
+    protected function _addContinue($data)
     {
         $limit  = $this->_limit;
         $record = 0x003C;         // Record identifier
@@ -255,7 +255,7 @@ class Spreadsheet_Excel_Writer_BIFFwriter extends PEAR
     * @param string $dir The dir to be used as temp dir
     * @return true if given dir is valid, false otherwise
     */
-    function setTempDir($dir)
+    public function setTempDir($dir)
     {
         if (is_dir($dir)) {
             $this->_tmp_dir = $dir;
diff --git a/Spreadsheet/Excel/Writer/Format.php b/Spreadsheet/Excel/Writer/Format.php
index 8922360..58dc8d1 100644
--- a/Spreadsheet/Excel/Writer/Format.php
+++ b/Spreadsheet/Excel/Writer/Format.php
@@ -48,199 +48,199 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * The index given by the workbook when creating a new format.
     * @var integer
     */
-    var $_xf_index;
+    public $_xf_index;
 
     /**
     * Index to the FONT record.
     * @var integer
     */
-    var $font_index;
+    public $font_index;
 
     /**
     * The font name (ASCII).
     * @var string
     */
-    var $_font_name;
+    public $_font_name;
 
     /**
     * Height of font (1/20 of a point)
     * @var integer
     */
-    var $_size;
+    public $_size;
 
     /**
     * Bold style
     * @var integer
     */
-    var $_bold;
+    public $_bold;
 
     /**
     * Bit specifiying if the font is italic.
     * @var integer
     */
-    var $_italic;
+    public $_italic;
 
     /**
     * Index to the cell's color
     * @var integer
     */
-    var $_color;
+    public $_color;
 
     /**
     * The text underline property
     * @var integer
     */
-    var $_underline;
+    public $_underline;
 
     /**
     * Bit specifiying if the font has strikeout.
     * @var integer
     */
-    var $_font_strikeout;
+    public $_font_strikeout;
 
     /**
     * Bit specifiying if the font has outline.
     * @var integer
     */
-    var $_font_outline;
+    public $_font_outline;
 
     /**
     * Bit specifiying if the font has shadow.
     * @var integer
     */
-    var $_font_shadow;
+    public $_font_shadow;
 
     /**
     * 2 bytes specifiying the script type for the font.
     * @var integer
     */
-    var $_font_script;
+    public $_font_script;
 
     /**
     * Byte specifiying the font family.
     * @var integer
     */
-    var $_font_family;
+    public $_font_family;
 
     /**
     * Byte specifiying the font charset.
     * @var integer
     */
-    var $_font_charset;
+    public $_font_charset;
 
     /**
     * An index (2 bytes) to a FORMAT record (number format).
     * @var integer
     */
-    var $_num_format;
+    public $_num_format;
 
     /**
     * Bit specifying if formulas are hidden.
     * @var integer
     */
-    var $_hidden;
+    public $_hidden;
 
     /**
     * Bit specifying if the cell is locked.
     * @var integer
     */
-    var $_locked;
+    public $_locked;
 
     /**
     * The three bits specifying the text horizontal alignment.
     * @var integer
     */
-    var $_text_h_align;
+    public $_text_h_align;
 
     /**
     * Bit specifying if the text is wrapped at the right border.
     * @var integer
     */
-    var $_text_wrap;
+    public $_text_wrap;
 
     /**
     * The three bits specifying the text vertical alignment.
     * @var integer
     */
-    var $_text_v_align;
+    public $_text_v_align;
 
     /**
     * 1 bit, apparently not used.
     * @var integer
     */
-    var $_text_justlast;
+    public $_text_justlast;
 
     /**
     * The two bits specifying the text rotation.
     * @var integer
     */
-    var $_rotation;
+    public $_rotation;
 
     /**
     * The cell's foreground color.
     * @var integer
     */
-    var $_fg_color;
+    public $_fg_color;
 
     /**
     * The cell's background color.
     * @var integer
     */
-    var $_bg_color;
+    public $_bg_color;
 
     /**
     * The cell's background fill pattern.
     * @var integer
     */
-    var $_pattern;
+    public $_pattern;
 
     /**
     * Style of the bottom border of the cell
     * @var integer
     */
-    var $_bottom;
+    public $_bottom;
 
     /**
     * Color of the bottom border of the cell.
     * @var integer
     */
-    var $_bottom_color;
+    public $_bottom_color;
 
     /**
     * Style of the top border of the cell
     * @var integer
     */
-    var $_top;
+    public $_top;
 
     /**
     * Color of the top border of the cell.
     * @var integer
     */
-    var $_top_color;
+    public $_top_color;
 
     /**
     * Style of the left border of the cell
     * @var integer
     */
-    var $_left;
+    public $_left;
 
     /**
     * Color of the left border of the cell.
     * @var integer
     */
-    var $_left_color;
+    public $_left_color;
 
     /**
     * Style of the right border of the cell
     * @var integer
     */
-    var $_right;
+    public $_right;
 
     /**
     * Color of the right border of the cell.
     * @var integer
     */
-    var $_right_color;
+    public $_right_color;
 
     /**
     * Constructor
@@ -249,7 +249,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @param integer $index the XF index for the format.
     * @param array   $properties array with properties to be set on initialization.
     */
-    function Spreadsheet_Excel_Writer_Format($BIFF_version, $index = 0, $properties =  array())
+    public function Spreadsheet_Excel_Writer_Format($BIFF_version, $index = 0, $properties =  array())
     {
         $this->_xf_index       = $index;
         $this->_BIFF_version   = $BIFF_version;
@@ -312,7 +312,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @param string $style The type of the XF record ('style' or 'cell').
     * @return string The XF record
     */
-    function getXf($style)
+    public function getXf($style)
     {
         // Set the type of the XF record and some of the attributes.
         if ($style == 'style') {
@@ -444,7 +444,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     *
     * @return string The FONT record
     */
-    function getFont()
+    public function getFont()
     {
         $dyHeight   = $this->_size * 20;    // Height of font (1/20 of a point)
         $icv        = $this->_color;        // Index to color palette
@@ -500,7 +500,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     *
     * @return string A key for this font
     */
-    function getFontKey()
+    public function getFontKey()
     {
         $key  = "$this->_font_name$this->_size";
         $key .= "$this->_font_script$this->_underline";
@@ -516,7 +516,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     *
     * @return integer The index for the XF record
     */
-    function getXfIndex()
+    public function getXfIndex()
     {
         return($this->_xf_index);
     }
@@ -530,7 +530,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @param string $name_color name of the color (i.e.: 'blue', 'red', etc..). Optional.
     * @return integer The color index
     */
-    function _getColor($name_color = '')
+    protected function _getColor($name_color = '')
     {
         $colors = array(
                           'aqua'    => 0x07,
@@ -583,7 +583,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param string $location alignment for the cell ('left', 'right', etc...).
     */
-    function setAlign($location)
+    public function setAlign($location)
     {
         if (preg_match("/\d/",$location)) {
             return;                      // Ignore numbers
@@ -641,14 +641,14 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param string $location alignment for the cell ('left', 'right', etc...).
     */
-    function setHAlign($location)
+    public function setHAlign($location)
     {
         if (preg_match("/\d/",$location)) {
             return;                      // Ignore numbers
         }
-    
+
         $location = strtolower($location);
-    
+
         if ($location == 'left') {
             $this->_text_h_align = 1;
         }
@@ -681,14 +681,14 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param string $location alignment for the cell ('top', 'vleft', 'vright', etc...).
     */
-    function setVAlign($location)
+    public function setVAlign($location)
     {
         if (preg_match("/\d/",$location)) {
             return;                      // Ignore numbers
         }
-    
+
         $location = strtolower($location);
- 
+
         if ($location == 'top') {
             $this->_text_v_align = 0;
         }
@@ -714,7 +714,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     *
     * @access public
     */
-    function setMerge()
+    public function setMerge()
     {
         $this->setAlign('merge');
     }
@@ -729,7 +729,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
                              1 maps to 700 (bold text). Valid range is: 100-1000.
                              It's Optional, default is 1 (bold).
     */
-    function setBold($weight = 1)
+    public function setBold($weight = 1)
     {
         if ($weight == 1) {
             $weight = 0x2BC;  // Bold text
@@ -757,7 +757,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param integer $style style of the cell border. 1 => thin, 2 => thick.
     */
-    function setBottom($style)
+    public function setBottom($style)
     {
         $this->_bottom = $style;
     }
@@ -768,7 +768,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param integer $style style of the cell top border. 1 => thin, 2 => thick.
     */
-    function setTop($style)
+    public function setTop($style)
     {
         $this->_top = $style;
     }
@@ -779,7 +779,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param integer $style style of the cell left border. 1 => thin, 2 => thick.
     */
-    function setLeft($style)
+    public function setLeft($style)
     {
         $this->_left = $style;
     }
@@ -790,7 +790,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param integer $style style of the cell right border. 1 => thin, 2 => thick.
     */
-    function setRight($style)
+    public function setRight($style)
     {
         $this->_right = $style;
     }
@@ -802,7 +802,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param integer $style style to apply for all cell borders. 1 => thin, 2 => thick.
     */
-    function setBorder($style)
+    public function setBorder($style)
     {
         $this->setBottom($style);
         $this->setTop($style);
@@ -822,7 +822,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @param mixed $color The color we are setting. Either a string (like 'blue'),
     *                     or an integer (range is [8...63]).
     */
-    function setBorderColor($color)
+    public function setBorderColor($color)
     {
         $this->setBottomColor($color);
         $this->setTopColor($color);
@@ -836,7 +836,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param mixed $color either a string (like 'blue'), or an integer (range is [8...63]).
     */
-    function setBottomColor($color)
+    public function setBottomColor($color)
     {
         $value = $this->_getColor($color);
         $this->_bottom_color = $value;
@@ -848,7 +848,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param mixed $color either a string (like 'blue'), or an integer (range is [8...63]).
     */
-    function setTopColor($color)
+    public function setTopColor($color)
     {
         $value = $this->_getColor($color);
         $this->_top_color = $value;
@@ -860,7 +860,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param mixed $color either a string (like 'blue'), or an integer (range is [8...63]).
     */
-    function setLeftColor($color)
+    public function setLeftColor($color)
     {
         $value = $this->_getColor($color);
         $this->_left_color = $value;
@@ -872,7 +872,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param mixed $color either a string (like 'blue'), or an integer (range is [8...63]).
     */
-    function setRightColor($color)
+    public function setRightColor($color)
     {
         $value = $this->_getColor($color);
         $this->_right_color = $value;
@@ -885,7 +885,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param mixed $color either a string (like 'blue'), or an integer (range is [8...63]).
     */
-    function setFgColor($color)
+    public function setFgColor($color)
     {
         $value = $this->_getColor($color);
         $this->_fg_color = $value;
@@ -900,7 +900,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param mixed $color either a string (like 'blue'), or an integer (range is [8...63]).
     */
-    function setBgColor($color)
+    public function setBgColor($color)
     {
         $value = $this->_getColor($color);
         $this->_bg_color = $value;
@@ -915,7 +915,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param mixed $color either a string (like 'blue'), or an integer (range is [8...63]).
     */
-    function setColor($color)
+    public function setColor($color)
     {
         $value = $this->_getColor($color);
         $this->_color = $value;
@@ -928,7 +928,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @param integer $arg Optional. Defaults to 1. Meaningful values are: 0-18,
     *                     0 meaning no background.
     */
-    function setPattern($arg = 1)
+    public function setPattern($arg = 1)
     {
         $this->_pattern = $arg;
     }
@@ -940,7 +940,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @param integer $underline The value for underline. Possible values are:
     *                          1 => underline, 2 => double underline.
     */
-    function setUnderline($underline)
+    public function setUnderline($underline)
     {
         $this->_underline = $underline;
     }
@@ -950,7 +950,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     *
     * @access public
     */
-    function setItalic()
+    public function setItalic()
     {
         $this->_italic = 1;
     }
@@ -961,7 +961,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param integer $size The font size (in pixels I think).
     */
-    function setSize($size)
+    public function setSize($size)
     {
         $this->_size = $size;
     }
@@ -971,7 +971,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     *
     * @access public
     */
-    function setTextWrap()
+    public function setTextWrap()
     {
         $this->_text_wrap = 1;
     }
@@ -983,7 +983,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @param integer $angle The rotation angle for the text (clockwise). Possible
                             values are: 0, 90, 270 and -1 for stacking top-to-bottom.
     */
-    function setTextRotation($angle)
+    public function setTextRotation($angle)
     {
         switch ($angle)
         {
@@ -1027,7 +1027,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @access public
     * @param integer $num_format The numeric format.
     */
-    function setNumFormat($num_format)
+    public function setNumFormat($num_format)
     {
         $this->_num_format = $num_format;
     }
@@ -1037,7 +1037,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     *
     * @access public
     */
-    function setStrikeOut()
+    public function setStrikeOut()
     {
         $this->_font_strikeout = 1;
     }
@@ -1047,7 +1047,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     *
     * @access public
     */
-    function setOutLine()
+    public function setOutLine()
     {
         $this->_font_outline = 1;
     }
@@ -1057,7 +1057,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     *
     * @access public
     */
-    function setShadow()
+    public function setShadow()
     {
         $this->_font_shadow = 1;
     }
@@ -1069,7 +1069,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @param integer $script The value for script type. Possible values are:
     *                        1 => superscript, 2 => subscript.
     */
-    function setScript($script)
+    public function setScript($script)
     {
         $this->_font_script = $script;
     }
@@ -1079,7 +1079,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
      *
      * @access public
      */
-     function setLocked()
+     public function setLocked()
      {
          $this->_locked = 1;
      }
@@ -1089,7 +1089,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     *
     * @access public
     */
-    function setUnLocked()
+    public function setUnLocked()
     {
         $this->_locked = 0;
     }
@@ -1101,7 +1101,7 @@ class Spreadsheet_Excel_Writer_Format extends PEAR
     * @param string $fontfamily The font family name. Possible values are:
     *                           'Times New Roman', 'Arial', 'Courier'.
     */
-    function setFontFamily($font_family)
+    public function setFontFamily($font_family)
     {
         $this->_font_name = $font_family;
     }
diff --git a/Spreadsheet/Excel/Writer/Parser.php b/Spreadsheet/Excel/Writer/Parser.php
index bd93824..ee43e12 100644
--- a/Spreadsheet/Excel/Writer/Parser.php
+++ b/Spreadsheet/Excel/Writer/Parser.php
@@ -113,55 +113,55 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * The index of the character we are currently looking at
     * @var integer
     */
-    var $_current_char;
+    public $_current_char;
 
     /**
     * The token we are working on.
     * @var string
     */
-    var $_current_token;
+    public $_current_token;
 
     /**
     * The formula to parse
     * @var string
     */
-    var $_formula;
+    public $_formula;
 
     /**
     * The character ahead of the current char
     * @var string
     */
-    var $_lookahead;
+    public $_lookahead;
 
     /**
     * The parse tree to be generated
     * @var string
     */
-    var $_parse_tree;
+    public $_parse_tree;
 
     /**
     * The byte order. 1 => big endian, 0 => little endian.
     * @var integer
     */
-    var $_byte_order;
+    public $_byte_order;
 
     /**
     * Array of external sheets
     * @var array
     */
-    var $_ext_sheets;
+    public $_ext_sheets;
 
     /**
     * Array of sheet references in the form of REF structures
     * @var array
     */
-    var $_references;
+    public $_references;
 
     /**
     * The BIFF version for the workbook
     * @var integer
     */
-    var $_BIFF_version;
+    public $_BIFF_version;
 
     /**
     * The class constructor
@@ -169,7 +169,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @param integer $byte_order The byte order (Little endian or Big endian) of the architecture
                                  (optional). 1 => big endian, 0 (default) little endian.
     */
-    function Spreadsheet_Excel_Writer_Parser($byte_order, $biff_version)
+    public function Spreadsheet_Excel_Writer_Parser($byte_order, $biff_version)
     {
         $this->_current_char  = 0;
         $this->_BIFF_version  = $biff_version;
@@ -177,18 +177,18 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
         $this->_formula       = '';       // The formula to parse.
         $this->_lookahead     = '';       // The character ahead of the current char.
         $this->_parse_tree    = '';       // The parse tree to be generated.
-        $this->_initializeHashes();      // Initialize the hashes: ptg's and function's ptg's
+        $this->_initializeHashes();      // Initialize the hashes: ptg's and public function's ptg's
         $this->_byte_order = $byte_order; // Little Endian or Big Endian
         $this->_ext_sheets = array();
         $this->_references = array();
     }
 
     /**
-    * Initialize the ptg and function hashes.
+    * Initialize the ptg and public function hashes.
     *
     * @access private
     */
-    function _initializeHashes()
+    protected function _initializeHashes()
     {
         // The Excel ptg indices
         $this->ptg = array(
@@ -292,18 +292,18 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
         // Thanks to Michael Meeks and Gnumeric for the initial arg values.
         //
         // The following hash was generated by "function_locale.pl" in the distro.
-        // Refer to function_locale.pl for non-English function names.
+        // Refer to function_locale.pl for non-English public function names.
         //
         // The array elements are as follow:
-        // ptg:   The Excel function ptg code.
-        // args:  The number of arguments that the function takes:
+        // ptg:   The Excel public function ptg code.
+        // args:  The number of arguments that the public function takes:
         //           >=0 is a fixed number of arguments.
         //           -1  is a variable  number of arguments.
-        // class: The reference, value or array class of the function args.
-        // vol:   The function is volatile.
+        // class: The reference, value or array class of the public function args.
+        // vol:   The public function is volatile.
         //
         $this->_functions = array(
-              // function                  ptg  args  class  vol
+              // public function                  ptg  args  class  vol
               'COUNT'           => array(   0,   -1,    0,    0 ),
               'IF'              => array(   1,   -1,    1,    0 ),
               'ISNA'            => array(   2,    1,    1,    0 ),
@@ -540,7 +540,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @return mixed the converted token on success. PEAR_Error if the token
     *               is not recognized
     */
-    function _convert($token)
+    protected function _convert($token)
     {
         if (preg_match("/^\"[^\"]{0,255}\"$/", $token)) {
             return $this->_convertString($token);
@@ -600,7 +600,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @access private
     * @param mixed $num an integer or double for conversion to its ptg value
     */
-    function _convertNumber($num)
+    protected function _convertNumber($num)
     {
         // Integer in the range 0..2**16-1
         if ((preg_match("/^\d+$/", $num)) and ($num <= 65535)) {
@@ -621,7 +621,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @return mixed the converted token on success. PEAR_Error if the string
     *               is longer than 255 characters.
     */
-    function _convertString($string)
+    protected function _convertString($string)
     {
         // chop away beggining and ending quotes
         $string = substr($string, 1, strlen($string) - 2);
@@ -638,15 +638,15 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     }
 
     /**
-    * Convert a function to a ptgFunc or ptgFuncVarV depending on the number of
+    * Convert a public function to a ptgFunc or ptgFuncVarV depending on the number of
     * args that it takes.
     *
     * @access private
-    * @param string  $token    The name of the function for convertion to ptg value.
-    * @param integer $num_args The number of arguments the function receives.
-    * @return string The packed ptg for the function
+    * @param string  $token    The name of the public function for convertion to ptg value.
+    * @param integer $num_args The number of arguments the public function receives.
+    * @return string The packed ptg for the public function
     */
-    function _convertFunction($token, $num_args)
+    protected function _convertFunction($token, $num_args)
     {
         $args     = $this->_functions[$token][1];
         $volatile = $this->_functions[$token][3];
@@ -667,7 +667,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @access private
     * @param string $range An Excel range in the A1:A2 or A1..A2 format.
     */
-    function _convertRange2d($range, $class=0)
+    protected function _convertRange2d($range, $class=0)
     {
 
         // TODO: possible class value 0,1,2 check Formula.pm
@@ -716,7 +716,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @param string $token An Excel range in the Sheet1!A1:A2 format.
     * @return mixed The packed ptgArea3d token on success, PEAR_Error on failure.
     */
-    function _convertRange3d($token)
+    protected function _convertRange3d($token)
     {
         $class = 2; // as far as I know, this is magick.
 
@@ -780,7 +780,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @param string $cell An Excel cell reference
     * @return string The cell in packed() format with the corresponding ptg
     */
-    function _convertRef2d($cell)
+    protected function _convertRef2d($cell)
     {
         $class = 2; // as far as I know, this is magick.
 
@@ -813,7 +813,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @param string $cell An Excel cell reference
     * @return mixed The packed ptgRef3d token on success, PEAR_Error on failure.
     */
-    function _convertRef3d($cell)
+    protected function _convertRef3d($cell)
     {
         $class = 2; // as far as I know, this is magick.
 
@@ -858,7 +858,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @param string $ext_ref The name of the external reference
     * @return string The reference index in packed() format
     */
-    function _packExtRef($ext_ref)
+    protected function _packExtRef($ext_ref)
     {
         $ext_ref = preg_replace("/^'/", '', $ext_ref); // Remove leading  ' if any.
         $ext_ref = preg_replace("/'$/", '', $ext_ref); // Remove trailing ' if any.
@@ -904,7 +904,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @return mixed The reference index in packed() format on success,
     *               PEAR_Error on failure
     */
-    function _getRefIndex($ext_ref)
+    protected function _getRefIndex($ext_ref)
     {
         $ext_ref = preg_replace("/^'/", '', $ext_ref); // Remove leading  ' if any.
         $ext_ref = preg_replace("/'$/", '', $ext_ref); // Remove trailing ' if any.
@@ -962,7 +962,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @access private
     * @return integer The sheet index, -1 if the sheet was not found
     */
-    function _getSheetIndex($sheet_name)
+    protected function _getSheetIndex($sheet_name)
     {
         if (!isset($this->_ext_sheets[$sheet_name])) {
             return -1;
@@ -981,7 +981,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @param string  $name  The name of the worksheet being added
     * @param integer $index The index of the worksheet being added
     */
-    function setExtSheet($name, $index)
+    public function setExtSheet($name, $index)
     {
         $this->_ext_sheets[$name] = $index;
     }
@@ -993,7 +993,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @param string $cell The Excel cell reference to be packed
     * @return array Array containing the row and column in packed() format
     */
-    function _cellToPackedRowcol($cell)
+    protected function _cellToPackedRowcol($cell)
     {
         $cell = strtoupper($cell);
         list($row, $col, $row_rel, $col_rel) = $this->_cellToRowcol($cell);
@@ -1028,7 +1028,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @param string $range The Excel range to be packed
     * @return array Array containing (row1,col1,row2,col2) in packed() format
     */
-    function _rangeToPackedRange($range)
+    protected function _rangeToPackedRange($range)
     {
         preg_match('/(\$)?(\d+)\:(\$)?(\d+)/', $range, $match);
         // return absolute rows if there is a $ in the ref
@@ -1075,7 +1075,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @param string $cell The Excel cell reference in A1 format.
     * @return array
     */
-    function _cellToRowcol($cell)
+    protected function _cellToRowcol($cell)
     {
         preg_match('/(\$)?([A-I]?[A-Z])(\$)?(\d+)/',$cell,$match);
         // return absolute column if there is a $ in the ref
@@ -1105,7 +1105,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     *
     * @access private
     */
-    function _advance()
+    protected function _advance()
     {
         $i = $this->_current_char;
         $formula_length = strlen($this->_formula);
@@ -1155,7 +1155,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @param mixed $token The token to check.
     * @return mixed       The checked token or false on failure
     */
-    function _match($token)
+    protected function _match($token)
     {
         switch($token) {
             case SPREADSHEET_EXCEL_WRITER_ADD:
@@ -1213,7 +1213,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
             default:
                 // if it's a reference
                 if (preg_match('/^\$?[A-Ia-i]?[A-Za-z]\$?[0-9]+$/',$token) and
-                   !preg_match("/[0-9]/",$this->_lookahead) and 
+                   !preg_match("/[0-9]/",$this->_lookahead) and
                    ($this->_lookahead != ':') and ($this->_lookahead != '.') and
                    ($this->_lookahead != '!'))
                 {
@@ -1234,13 +1234,13 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
                     return $token;
                 }
                 // if it's a range (A1:A2)
-                elseif (preg_match("/^(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+:(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+$/",$token) and 
+                elseif (preg_match("/^(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+:(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+$/",$token) and
                        !preg_match("/[0-9]/",$this->_lookahead))
                 {
                     return $token;
                 }
                 // if it's a range (A1..A2)
-                elseif (preg_match("/^(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+\.\.(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+$/",$token) and 
+                elseif (preg_match("/^(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+\.\.(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+$/",$token) and
                        !preg_match("/[0-9]/",$this->_lookahead))
                 {
                     return $token;
@@ -1258,7 +1258,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
                     return $token;
                 }
                 // If it's a number (check that it's not a sheet name or range)
-                elseif (is_numeric($token) and 
+                elseif (is_numeric($token) and
                         (!is_numeric($token.$this->_lookahead) or ($this->_lookahead == '')) and
                         ($this->_lookahead != '!') and ($this->_lookahead != ':'))
                 {
@@ -1269,7 +1269,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
                 {
                     return $token;
                 }
-                // if it's a function call
+                // if it's a public function call
                 elseif (preg_match("/^[A-Z0-9\xc0-\xdc\.]+$/i",$token) and ($this->_lookahead == "("))
                 {
                     return $token;
@@ -1286,7 +1286,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     *                        sign (=).
     * @return mixed true on success, PEAR_Error on failure
     */
-    function parse($formula)
+    public function parse($formula)
     {
         $this->_current_char = 0;
         $this->_formula      = $formula;
@@ -1306,7 +1306,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @access private
     * @return mixed The parsed ptg'd tree on success, PEAR_Error on failure
     */
-    function _condition()
+    protected function _condition()
     {
         $result = $this->_expression();
         if (PEAR::isError($result)) {
@@ -1374,7 +1374,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @access private
     * @return mixed The parsed ptg'd tree on success, PEAR_Error on failure
     */
-    function _expression()
+    protected function _expression()
     {
         // If it's a string return a string node
         if (preg_match("/^\"[^\"]{0,255}\"$/", $this->_current_token)) {
@@ -1415,14 +1415,14 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     }
 
     /**
-    * This function just introduces a ptgParen element in the tree, so that Excel
+    * This public function just introduces a ptgParen element in the tree, so that Excel
     * doesn't get confused when working with a parenthesized formula afterwards.
     *
     * @access private
     * @see _fact()
     * @return array The parsed ptg'd tree
     */
-    function _parenthesizedExpression()
+    protected function _parenthesizedExpression()
     {
         $result = $this->_createTree('ptgParen', $this->_expression(), '');
         return $result;
@@ -1435,7 +1435,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @access private
     * @return mixed The parsed ptg'd tree on success, PEAR_Error on failure
     */
-    function _term()
+    protected function _term()
     {
         $result = $this->_fact();
         if (PEAR::isError($result)) {
@@ -1474,7 +1474,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @access private
     * @return mixed The parsed ptg'd tree on success, PEAR_Error on failure
     */
-    function _fact()
+    protected function _fact()
     {
         if ($this->_current_token == SPREADSHEET_EXCEL_WRITER_OPEN) {
             $this->_advance();         // eat the "("
@@ -1507,7 +1507,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
             return $result;
         }
         // if it's a range
-        elseif (preg_match("/^(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+:(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+$/",$this->_current_token) or 
+        elseif (preg_match("/^(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+:(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+$/",$this->_current_token) or
                 preg_match("/^(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+\.\.(\$)?[A-Ia-i]?[A-Za-z](\$)?[0-9]+$/",$this->_current_token))
         {
             $result = $this->_current_token;
@@ -1534,7 +1534,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
             $this->_advance();
             return $result;
         }
-        // if it's a function call
+        // if it's a public function call
         elseif (preg_match("/^[A-Z0-9\xc0-\xdc\.]+$/i",$this->_current_token))
         {
             $result = $this->_func();
@@ -1546,13 +1546,13 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     }
 
     /**
-    * It parses a function call. It assumes the following rule:
+    * It parses a public function call. It assumes the following rule:
     * Func -> ( Expr [,Expr]* )
     *
     * @access private
     * @return mixed The parsed ptg'd tree on success, PEAR_Error on failure
     */
-    function _func()
+    protected function _func()
     {
         $num_args = 0; // number of arguments received
         $function = strtoupper($this->_current_token);
@@ -1568,7 +1568,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
                     $this->_advance();  // eat the "," or ";"
                 } else {
                     return $this->raiseError("Syntax error: comma expected in ".
-                                      "function $function, arg #{$num_args}");
+                                      "public function $function, arg #{$num_args}");
                 }
                 $result2 = $this->_condition();
                 if (PEAR::isError($result2)) {
@@ -1590,7 +1590,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
         $args = $this->_functions[$function][1];
         // If fixed number of args eg. TIME($i,$j,$k). Check that the number of args is valid.
         if (($args >= 0) and ($args != $num_args)) {
-            return $this->raiseError("Incorrect number of arguments in function $function() ");
+            return $this->raiseError("Incorrect number of arguments in public function $function() ");
         }
 
         $result = $this->_createTree($function, $result, $num_args);
@@ -1608,7 +1608,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @param mixed $right The right array (sub-tree) or a final node.
     * @return array A tree
     */
-    function _createTree($value, $left, $right)
+    protected function _createTree($value, $left, $right)
     {
         return array('value' => $value, 'left' => $left, 'right' => $right);
     }
@@ -1640,7 +1640,7 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
     * @param array $tree The optional tree to convert.
     * @return string The tree in reverse polish notation
     */
-    function toReversePolish($tree = array())
+    public function toReversePolish($tree = array())
     {
         $polish = ""; // the string we are going to return
         if (empty($tree)) { // If it's the first call use _parse_tree
@@ -1672,14 +1672,14 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
             }
             $polish .= $converted_tree;
         }
-        // if it's a function convert it here (so we can set it's arguments)
+        // if it's a public function convert it here (so we can set it's arguments)
         if (preg_match("/^[A-Z0-9\xc0-\xdc\.]+$/",$tree['value']) and
             !preg_match('/^([A-Ia-i]?[A-Za-z])(\d+)$/',$tree['value']) and
             !preg_match("/^[A-Ia-i]?[A-Za-z](\d+)\.\.[A-Ia-i]?[A-Za-z](\d+)$/",$tree['value']) and
             !is_numeric($tree['value']) and
             !isset($this->ptg[$tree['value']]))
         {
-            // left subtree for a function is always an array.
+            // left subtree for a public function is always an array.
             if ($tree['left'] != '') {
                 $left_tree = $this->toReversePolish($tree['left']);
             } else {
@@ -1700,4 +1700,4 @@ class Spreadsheet_Excel_Writer_Parser extends PEAR
         return $polish;
     }
 }
-?>
+
diff --git a/Spreadsheet/Excel/Writer/Validator.php b/Spreadsheet/Excel/Writer/Validator.php
index 0f091c6..e100326 100644
--- a/Spreadsheet/Excel/Writer/Validator.php
+++ b/Spreadsheet/Excel/Writer/Validator.php
@@ -47,27 +47,27 @@ define("OP_LTE",        0x07);
 */
 class Spreadsheet_Excel_Writer_Validator
 {
-   var $_type;
-   var $_style;
-   var $_fixedList;
-   var $_blank;
-   var $_incell;
-   var $_showprompt;
-   var $_showerror;
-   var $_title_prompt;
-   var $_descr_prompt;
-   var $_title_error;
-   var $_descr_error;
-   var $_operator;
-   var $_formula1;
-   var $_formula2;
+   public $_type;
+   public $_style;
+   public $_fixedList;
+   public $_blank;
+   public $_incell;
+   public $_showprompt;
+   public $_showerror;
+   public $_title_prompt;
+   public $_descr_prompt;
+   public $_title_error;
+   public $_descr_error;
+   public $_operator;
+   public $_formula1;
+   public $_formula2;
     /**
     * The parser from the workbook. Used to parse validation formulas also
     * @var Spreadsheet_Excel_Writer_Parser
     */
-    var $_parser;
+    public $_parser;
 
-    function Spreadsheet_Excel_Writer_Validator(&$parser)
+    public function Spreadsheet_Excel_Writer_Validator(&$parser)
     {
         $this->_parser       = $parser;
         $this->_type         = 0x01; // FIXME: add method for setting datatype
@@ -86,41 +86,41 @@ class Spreadsheet_Excel_Writer_Validator
         $this->_formula2    = '';
     }
 
-   function setPrompt($promptTitle = "\x00", $promptDescription = "\x00", $showPrompt = true)
+   public function setPrompt($promptTitle = "\x00", $promptDescription = "\x00", $showPrompt = true)
    {
       $this->_showprompt = $showPrompt;
       $this->_title_prompt = $promptTitle;
       $this->_descr_prompt = $promptDescription;
    }
 
-   function setError($errorTitle = "\x00", $errorDescription = "\x00", $showError = true)
+   public function setError($errorTitle = "\x00", $errorDescription = "\x00", $showError = true)
    {
       $this->_showerror = $showError;
       $this->_title_error = $errorTitle;
       $this->_descr_error = $errorDescription;
    }
 
-   function allowBlank()
+   public function allowBlank()
    {
       $this->_blank = true;
    }
 
-   function onInvalidStop()
+   public function onInvalidStop()
    {
       $this->_style = 0x00;
    }
 
-    function onInvalidWarn()
+    public function onInvalidWarn()
     {
         $this->_style = 0x01;
     }
 
-    function onInvalidInfo()
+    public function onInvalidInfo()
     {
         $this->_style = 0x02;
     }
 
-    function setFormula1($formula)
+    public function setFormula1($formula)
     {
         // Parse the formula using the parser in Parser.php
         $error = $this->_parser->parse($formula);
@@ -135,7 +135,7 @@ class Spreadsheet_Excel_Writer_Validator
         return true;
     }
 
-    function setFormula2($formula)
+    public function setFormula2($formula)
     {
         // Parse the formula using the parser in Parser.php
         $error = $this->_parser->parse($formula);
@@ -150,7 +150,7 @@ class Spreadsheet_Excel_Writer_Validator
         return true;
     }
 
-    function _getOptions()
+    protected function _getOptions()
     {
         $options = $this->_type;
         $options |= $this->_style << 3;
@@ -174,7 +174,7 @@ class Spreadsheet_Excel_Writer_Validator
       return $options;
    }
 
-   function _getData()
+   protected function _getData()
    {
       $title_prompt_len = strlen($this->_title_prompt);
       $descr_prompt_len = strlen($this->_descr_prompt);
@@ -199,13 +199,13 @@ class Spreadsheet_Excel_Writer_Validator
 
 /*class Spreadsheet_Excel_Writer_Validation_List extends Spreadsheet_Excel_Writer_Validation
 {
-   function Spreadsheet_Excel_Writer_Validation_list()
+   public function Spreadsheet_Excel_Writer_Validation_list()
    {
       parent::Spreadsheet_Excel_Writer_Validation();
       $this->_type = 0x03;
    }
 
-   function setList($source, $incell = true)
+   public function setList($source, $incell = true)
    {
       $this->_incell = $incell;
       $this->_fixedList = true;
@@ -214,13 +214,13 @@ class Spreadsheet_Excel_Writer_Validator
       $this->_formula1 = pack("CCC", 0x17, strlen($source), 0x0c) . $source;
    }
 
-   function setRow($row, $col1, $col2, $incell = true)
+   public function setRow($row, $col1, $col2, $incell = true)
    {
       $this->_incell = $incell;
       //$this->_formula1 = ...;
    }
 
-   function setCol($col, $row1, $row2, $incell = true)
+   public function setCol($col, $row1, $row2, $incell = true)
    {
       $this->_incell = $incell;
       //$this->_formula1 = ...;
diff --git a/Spreadsheet/Excel/Writer/Workbook.php b/Spreadsheet/Excel/Writer/Workbook.php
index 788d461..00d9a5c 100644
--- a/Spreadsheet/Excel/Writer/Workbook.php
+++ b/Spreadsheet/Excel/Writer/Workbook.php
@@ -53,120 +53,120 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * Filename for the Workbook
     * @var string
     */
-    var $_filename;
+    public $_filename;
 
     /**
     * Formula parser
     * @var object Parser
     */
-    var $_parser;
+    public $_parser;
 
     /**
     * Flag for 1904 date system (0 => base date is 1900, 1 => base date is 1904)
     * @var integer
     */
-    var $_1904;
+    public $_1904;
 
     /**
     * The active worksheet of the workbook (0 indexed)
     * @var integer
     */
-    var $_activesheet;
+    public $_activesheet;
 
     /**
     * 1st displayed worksheet in the workbook (0 indexed)
     * @var integer
     */
-    var $_firstsheet;
+    public $_firstsheet;
 
     /**
     * Number of workbook tabs selected
     * @var integer
     */
-    var $_selected;
+    public $_selected;
 
     /**
     * Index for creating adding new formats to the workbook
     * @var integer
     */
-    var $_xf_index;
+    public $_xf_index;
 
     /**
     * Flag for preventing close from being called twice.
     * @var integer
     * @see close()
     */
-    var $_fileclosed;
+    public $_fileclosed;
 
     /**
     * The BIFF file size for the workbook.
     * @var integer
     * @see _calcSheetOffsets()
     */
-    var $_biffsize;
+    public $_biffsize;
 
     /**
     * The default sheetname for all sheets created.
     * @var string
     */
-    var $_sheetname;
+    public $_sheetname;
 
     /**
     * The default XF format.
     * @var object Format
     */
-    var $_tmp_format;
+    public $_tmp_format;
 
     /**
     * Array containing references to all of this workbook's worksheets
     * @var array
     */
-    var $_worksheets;
+    public $_worksheets;
 
     /**
     * Array of sheetnames for creating the EXTERNSHEET records
     * @var array
     */
-    var $_sheetnames;
+    public $_sheetnames;
 
     /**
     * Array containing references to all of this workbook's formats
     * @var array
     */
-    var $_formats;
+    public $_formats;
 
     /**
     * Array containing the colour palette
     * @var array
     */
-    var $_palette;
+    public $_palette;
 
     /**
     * The default format for URLs.
     * @var object Format
     */
-    var $_url_format;
+    public $_url_format;
 
     /**
     * The codepage indicates the text encoding used for strings
     * @var integer
     */
-    var $_codepage;
+    public $_codepage;
 
     /**
     * The country code used for localization
     * @var integer
     */
-    var $_country_code;
+    public $_country_code;
 
     /**
     * number of bytes for sizeinfo of strings
     * @var integer
     */
-    var $_string_sizeinfo_size;
+    public $_string_sizeinfo_size;
 
     /** @var int */
-    var $_timestamp;
+    public $_timestamp;
 
     /**
     * Class constructor
@@ -174,7 +174,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @param string filename for storing the workbook. "-" for writing to stdout.
     * @access public
     */
-    function Spreadsheet_Excel_Writer_Workbook($filename)
+    public function Spreadsheet_Excel_Writer_Workbook($filename)
     {
         // It needs to call its parent's constructor explicitly
         $this->Spreadsheet_Excel_Writer_BIFFwriter();
@@ -215,7 +215,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @access public
     * @return mixed true on success. PEAR_Error on failure
     */
-    function close()
+    public function close()
     {
         if ($this->_fileclosed) { // Prevent close() from being called twice.
             return true;
@@ -237,7 +237,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @see worksheets()
     * @return array
     */
-    function sheets()
+    public function sheets()
     {
         return $this->worksheets();
     }
@@ -249,14 +249,14 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @access public
     * @return array
     */
-    function worksheets()
+    public function worksheets()
     {
         return $this->_worksheets;
     }
 
     /**
     * Sets the BIFF version.
-    * This method exists just to access experimental functionality
+    * This method exists just to access experimental public functionality
     * from BIFF8. It will be deprecated !
     * Only possible value is 8 (Excel 97/2000).
     * For any other value it fails silently.
@@ -264,7 +264,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @access public
     * @param integer $version The BIFF version
     */
-    function setVersion($version)
+    public function setVersion($version)
     {
         if ($version == 8) { // only accept version 8
             $version = 0x0600;
@@ -297,7 +297,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @param integer $code Is the international calling country code for the
     *                      chosen country.
     */
-    function setCountry($code)
+    public function setCountry($code)
     {
         $this->_country_code = $code;
     }
@@ -312,7 +312,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @return mixed reference to a worksheet object on success, PEAR_Error
     *               on failure
     */
-    function &addWorksheet($name = '')
+    public function &addWorksheet($name = '')
     {
         $index     = count($this->_worksheets);
         $sheetname = $this->_sheetname;
@@ -362,7 +362,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @param array $properties array with properties for initializing the format.
     * @return &Spreadsheet_Excel_Writer_Format reference to an Excel Format
     */
-    function &addFormat($properties = array())
+    public function &addFormat($properties = array())
     {
         $format = new Spreadsheet_Excel_Writer_Format($this->_BIFF_version, $this->_xf_index, $properties);
         $this->_xf_index += 1;
@@ -376,7 +376,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
      * @access public
      * @return &Spreadsheet_Excel_Writer_Validator reference to a Validator
      */
-    function &addValidator()
+    public function &addValidator()
     {
         include_once 'Spreadsheet/Excel/Writer/Validator.php';
         /* FIXME: check for successful inclusion*/
@@ -394,7 +394,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @param integer $blue  blue RGB value [0-255]
     * @return integer The palette index for the custom color
     */
-    function setCustomColor($index, $red, $green, $blue)
+    public function setCustomColor($index, $red, $green, $blue)
     {
         // Match a HTML #xxyyzz style parameter
         /*if (defined $_[1] and $_[1] =~ /^#(\w\w)(\w\w)(\w\w)/ ) {
@@ -427,7 +427,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _setPaletteXl97()
+    protected function _setPaletteXl97()
     {
         $this->_palette = array(
                            array(0x00, 0x00, 0x00, 0x00),   // 8
@@ -496,7 +496,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @access private
     * @return mixed true on success. PEAR_Error on failure
     */
-    function _storeWorkbook()
+    protected function _storeWorkbook()
     {
         if (count($this->_worksheets) == 0) {
             return true;
@@ -572,7 +572,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @access private
     * @return mixed true on success. PEAR_Error on failure
     */
-    function _storeOLEFile()
+    protected function _storeOLEFile()
     {
         if($this->_BIFF_version == 0x0600) {
             $OLE = new OLE_PPS_File(OLE::Asc2Ucs('Workbook'));
@@ -612,7 +612,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _calcSheetOffsets()
+    protected function _calcSheetOffsets()
     {
         if ($this->_BIFF_version == 0x0600) {
             $boundsheet_length = 12;  // fixed length for a BOUNDSHEET record
@@ -651,7 +651,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storeAllFonts()
+    protected function _storeAllFonts()
     {
         // tmp_format is added by the constructor. We use this to write the default XF's
         $format = $this->_tmp_format;
@@ -695,7 +695,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storeAllNumFormats()
+    protected function _storeAllNumFormats()
     {
         // Leaning num_format syndrome
         $hash_num_formats = array();
@@ -743,7 +743,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storeAllXfs()
+    protected function _storeAllXfs()
     {
         // _tmp_format is added by the constructor. We use this to write the default XF's
         // The default font index is 0
@@ -770,7 +770,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storeAllStyles()
+    protected function _storeAllStyles()
     {
         $this->_storeStyle();
     }
@@ -781,7 +781,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storeExterns()
+    protected function _storeExterns()
 
     {
         // Create EXTERNCOUNT with number of worksheets
@@ -798,7 +798,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storeNames()
+    protected function _storeNames()
     {
         // Create the print area NAME records
         $total_worksheets = count($this->_worksheets);
@@ -878,7 +878,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storeCodepage()
+    protected function _storeCodepage()
     {
         $record          = 0x0042;             // Record identifier
         $length          = 0x0002;             // Number of bytes to follow
@@ -895,7 +895,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storeWindow1()
+    protected function _storeWindow1()
     {
         $record    = 0x003D;                 // Record identifier
         $length    = 0x0012;                 // Number of bytes to follow
@@ -928,7 +928,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @param integer $offset    Location of worksheet BOF
     * @access private
     */
-    function _storeBoundsheet($sheetname,$offset)
+    protected function _storeBoundsheet($sheetname,$offset)
     {
         $record    = 0x0085;                    // Record identifier
         if ($this->_BIFF_version == 0x0600) {
@@ -958,7 +958,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storeSupbookInternal()
+    protected function _storeSupbookInternal()
     {
         $record    = 0x01AE;   // Record identifier
         $length    = 0x0004;   // Bytes to follow
@@ -975,7 +975,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @param string $sheetname Worksheet name
     * @access private
     */
-    function _storeExternsheetBiff8()
+    protected function _storeExternsheetBiff8()
     {
         $total_references = count($this->_parser->_references);
         $record   = 0x0017;                     // Record identifier
@@ -995,7 +995,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storeStyle()
+    protected function _storeStyle()
     {
         $record    = 0x0293;   // Record identifier
         $length    = 0x0004;   // Bytes to follow
@@ -1017,7 +1017,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @param integer $ifmt   Format index code
     * @access private
     */
-    function _storeNumFormat($format, $ifmt)
+    protected function _storeNumFormat($format, $ifmt)
     {
         $record    = 0x041E;                      // Record identifier
 
@@ -1055,7 +1055,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storeDatemode()
+    protected function _storeDatemode()
     {
         $record    = 0x0022;         // Record identifier
         $length    = 0x0002;         // Bytes to follow
@@ -1081,7 +1081,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @param integer $cxals Number of external references
     * @access private
     */
-    function _storeExterncount($cxals)
+    protected function _storeExterncount($cxals)
     {
         $record   = 0x0016;          // Record identifier
         $length   = 0x0002;          // Number of bytes to follow
@@ -1102,7 +1102,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @param string $sheetname Worksheet name
     * @access private
     */
-    function _storeExternsheet($sheetname)
+    protected function _storeExternsheet($sheetname)
     {
         $record      = 0x0017;                     // Record identifier
         $length      = 0x02 + strlen($sheetname);  // Number of bytes to follow
@@ -1128,7 +1128,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @param integer $colmax End column
     * @access private
     */
-    function _storeNameShort($index, $type, $rowmin, $rowmax, $colmin, $colmax)
+    protected function _storeNameShort($index, $type, $rowmin, $rowmax, $colmin, $colmax)
     {
         $record          = 0x0018;       // Record identifier
         $length          = 0x0024;       // Number of bytes to follow
@@ -1194,7 +1194,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     * @param integer $colmax End column
     * @access private
     */
-    function _storeNameLong($index, $type, $rowmin, $rowmax, $colmin, $colmax)
+    protected function _storeNameLong($index, $type, $rowmin, $rowmax, $colmin, $colmax)
     {
         $record          = 0x0018;       // Record identifier
         $length          = 0x003d;       // Number of bytes to follow
@@ -1269,7 +1269,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storeCountry()
+    protected function _storeCountry()
     {
         $record          = 0x008C;    // Record identifier
         $length          = 4;         // Number of bytes to follow
@@ -1285,7 +1285,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storePalette()
+    protected function _storePalette()
     {
         $aref            = $this->_palette;
 
@@ -1315,7 +1315,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _calculateSharedStringsSizes()
+    protected function _calculateSharedStringsSizes()
     {
         /* Iterate through the strings to calculate the CONTINUE block sizes.
            For simplicity we use the same size for the SST and CONTINUE records:
@@ -1461,7 +1461,7 @@ class Spreadsheet_Excel_Writer_Workbook extends Spreadsheet_Excel_Writer_BIFFwri
     *
     * @access private
     */
-    function _storeSharedStringsTable()
+    protected function _storeSharedStringsTable()
     {
         $record  = 0x00fc;  // Record identifier
         $length  = 0x0008;  // Number of bytes to follow
diff --git a/Spreadsheet/Excel/Writer/Worksheet.php b/Spreadsheet/Excel/Writer/Worksheet.php
index 2cbf9b0..1ff4947 100644
--- a/Spreadsheet/Excel/Writer/Worksheet.php
+++ b/Spreadsheet/Excel/Writer/Worksheet.php
@@ -49,329 +49,329 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * Name of the Worksheet
     * @var string
     */
-    var $name;
+    public $name;
 
     /**
     * Index for the Worksheet
     * @var integer
     */
-    var $index;
+    public $index;
 
     /**
     * Reference to the (default) Format object for URLs
     * @var object Format
     */
-    var $_url_format;
+    public $_url_format;
 
     /**
     * Reference to the parser used for parsing formulas
     * @var object Format
     */
-    var $_parser;
+    public $_parser;
 
     /**
     * Filehandle to the temporary file for storing data
     * @var resource
     */
-    var $_filehandle;
+    public $_filehandle;
 
     /**
     * Boolean indicating if we are using a temporary file for storing data
     * @var bool
     */
-    var $_using_tmpfile;
+    public $_using_tmpfile;
 
     /**
     * Maximum number of rows for an Excel spreadsheet (BIFF5)
     * @var integer
     */
-    var $_xls_rowmax;
+    public $_xls_rowmax;
 
     /**
     * Maximum number of columns for an Excel spreadsheet (BIFF5)
     * @var integer
     */
-    var $_xls_colmax;
+    public $_xls_colmax;
 
     /**
     * Maximum number of characters for a string (LABEL record in BIFF5)
     * @var integer
     */
-    var $_xls_strmax;
+    public $_xls_strmax;
 
     /**
     * First row for the DIMENSIONS record
     * @var integer
     * @see _storeDimensions()
     */
-    var $_dim_rowmin;
+    public $_dim_rowmin;
 
     /**
     * Last row for the DIMENSIONS record
     * @var integer
     * @see _storeDimensions()
     */
-    var $_dim_rowmax;
+    public $_dim_rowmax;
 
     /**
     * First column for the DIMENSIONS record
     * @var integer
     * @see _storeDimensions()
     */
-    var $_dim_colmin;
+    public $_dim_colmin;
 
     /**
     * Last column for the DIMENSIONS record
     * @var integer
     * @see _storeDimensions()
     */
-    var $_dim_colmax;
+    public $_dim_colmax;
 
     /**
     * Array containing format information for columns
     * @var array
     */
-    var $_colinfo;
+    public $_colinfo;
 
     /**
     * Array containing the selected area for the worksheet
     * @var array
     */
-    var $_selection;
+    public $_selection;
 
     /**
     * Array containing the panes for the worksheet
     * @var array
     */
-    var $_panes;
+    public $_panes;
 
     /**
     * The active pane for the worksheet
     * @var integer
     */
-    var $_active_pane;
+    public $_active_pane;
 
     /**
     * Bit specifying if panes are frozen
     * @var integer
     */
-    var $_frozen;
+    public $_frozen;
 
     /**
     * Bit specifying if the worksheet is selected
     * @var integer
     */
-    var $selected;
+    public $selected;
 
     /**
     * The paper size (for printing) (DOCUMENT!!!)
     * @var integer
     */
-    var $_paper_size;
+    public $_paper_size;
 
     /**
     * Bit specifying paper orientation (for printing). 0 => landscape, 1 => portrait
     * @var integer
     */
-    var $_orientation;
+    public $_orientation;
 
     /**
     * The page header caption
     * @var string
     */
-    var $_header;
+    public $_header;
 
     /**
     * The page footer caption
     * @var string
     */
-    var $_footer;
+    public $_footer;
 
     /**
     * The horizontal centering value for the page
     * @var integer
     */
-    var $_hcenter;
+    public $_hcenter;
 
     /**
     * The vertical centering value for the page
     * @var integer
     */
-    var $_vcenter;
+    public $_vcenter;
 
     /**
     * The margin for the header
     * @var float
     */
-    var $_margin_head;
+    public $_margin_head;
 
     /**
     * The margin for the footer
     * @var float
     */
-    var $_margin_foot;
+    public $_margin_foot;
 
     /**
     * The left margin for the worksheet in inches
     * @var float
     */
-    var $_margin_left;
+    public $_margin_left;
 
     /**
     * The right margin for the worksheet in inches
     * @var float
     */
-    var $_margin_right;
+    public $_margin_right;
 
     /**
     * The top margin for the worksheet in inches
     * @var float
     */
-    var $_margin_top;
+    public $_margin_top;
 
     /**
     * The bottom margin for the worksheet in inches
     * @var float
     */
-    var $_margin_bottom;
+    public $_margin_bottom;
 
     /**
     * First row to reapeat on each printed page
     * @var integer
     */
-    var $title_rowmin;
+    public $title_rowmin;
 
     /**
     * Last row to reapeat on each printed page
     * @var integer
     */
-    var $title_rowmax;
+    public $title_rowmax;
 
     /**
     * First column to reapeat on each printed page
     * @var integer
     */
-    var $title_colmin;
+    public $title_colmin;
 
     /**
     * First row of the area to print
     * @var integer
     */
-    var $print_rowmin;
+    public $print_rowmin;
 
     /**
     * Last row to of the area to print
     * @var integer
     */
-    var $print_rowmax;
+    public $print_rowmax;
 
     /**
     * First column of the area to print
     * @var integer
     */
-    var $print_colmin;
+    public $print_colmin;
 
     /**
     * Last column of the area to print
     * @var integer
     */
-    var $print_colmax;
+    public $print_colmax;
 
     /**
     * Whether to display RightToLeft.
     * @var integer
     */
-    var $_Arabic;
+    public $_Arabic;
 
     /**
     * Whether to use outline.
     * @var integer
     */
-    var $_outline_on;
+    public $_outline_on;
 
     /**
     * Auto outline styles.
     * @var bool
     */
-    var $_outline_style;
+    public $_outline_style;
 
     /**
     * Whether to have outline summary below.
     * @var bool
     */
-    var $_outline_below;
+    public $_outline_below;
 
     /**
     * Whether to have outline summary at the right.
     * @var bool
     */
-    var $_outline_right;
+    public $_outline_right;
 
     /**
     * Outline row level.
     * @var integer
     */
-    var $_outline_row_level;
+    public $_outline_row_level;
 
     /**
     * Whether to fit to page when printing or not.
     * @var bool
     */
-    var $_fit_page;
+    public $_fit_page;
 
     /**
     * Number of pages to fit wide
     * @var integer
     */
-    var $_fit_width;
+    public $_fit_width;
 
     /**
     * Number of pages to fit high
     * @var integer
     */
-    var $_fit_height;
+    public $_fit_height;
 
     /**
     * Reference to the total number of strings in the workbook
     * @var integer
     */
-    var $_str_total;
+    public $_str_total;
 
     /**
     * Reference to the number of unique strings in the workbook
     * @var integer
     */
-    var $_str_unique;
+    public $_str_unique;
 
     /**
     * Reference to the array containing all the unique strings in the workbook
     * @var array
     */
-    var $_str_table;
+    public $_str_table;
 
     /**
      * Number of merged cell ranges in actual record
      * @var int $_merged_cells_counter
      */
-    var $_merged_cells_counter = 0;
+    public $_merged_cells_counter = 0;
 
     /**
      * Number of actual mergedcells record
      * @var int $_merged_cells_record
      */
-    var $_merged_cells_record = 0;
+    public $_merged_cells_record = 0;
 
     /**
     * Merged cell ranges
     * @var array
     */
-    var $_merged_ranges;
+    public $_merged_ranges;
 
     /**
     * Charset encoding currently used when calling writeString()
     * @var string
     */
-    var $_input_encoding;
+    public $_input_encoding;
 
     /**
     * Constructor
@@ -385,7 +385,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param string  $tmp_dir      The path to the directory for temporary files
     * @access private
     */
-    function Spreadsheet_Excel_Writer_Worksheet($BIFF_version, $name,
+    public function Spreadsheet_Excel_Writer_Worksheet($BIFF_version, $name,
                                                 $index, &$activesheet,
                                                 &$firstsheet, &$str_total,
                                                 &$str_unique, &$str_table,
@@ -495,7 +495,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _initialize()
+    protected function _initialize()
     {
         if ($this->_using_tmpfile == false) {
             return;
@@ -535,7 +535,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param array $sheetnames The array of sheetnames from the Workbook this
     *                          worksheet belongs to
     */
-    function close($sheetnames)
+    public function close($sheetnames)
     {
         $num_sheets = count($sheetnames);
 
@@ -664,7 +664,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @return string The worksheet's name
     */
-    function getName()
+    public function getName()
     {
         return $this->name;
     }
@@ -675,7 +675,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @return string The data
     */
-    function getData()
+    public function getData()
     {
         $buffer = 4096;
 
@@ -709,7 +709,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $last_row  Last row of the area to merge
     * @param integer $last_col  Last column of the area to merge
     */
-    function setMerge($first_row, $first_col, $last_row, $last_col)
+    public function setMerge($first_row, $first_col, $last_row, $last_col)
     {
         if (($last_row < $first_row) || ($last_col < $first_col)) {
             return;
@@ -734,7 +734,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access public
     */
-    function select()
+    public function select()
     {
         $this->selected = 1;
     }
@@ -746,7 +746,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access public
     */
-    function activate()
+    public function activate()
     {
         $this->selected = 1;
         $this->activesheet = $this->index;
@@ -759,7 +759,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access public
     */
-    function setFirstSheet()
+    public function setFirstSheet()
     {
         $this->firstsheet = $this->index;
     }
@@ -772,7 +772,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param string $password The password to use for protecting the sheet.
     */
-    function protect($password)
+    public function protect($password)
     {
         $this->_protect   = 1;
         $this->_password  = $this->_encodePassword($password);
@@ -789,7 +789,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $hidden   The optional hidden atribute
     * @param integer $level    The optional outline level
     */
-    function setColumn($firstcol, $lastcol, $width, $format = null, $hidden = 0, $level = 0) 
+    public function setColumn($firstcol, $lastcol, $width, $format = null, $hidden = 0, $level = 0) 
     { // added by Dan Lynn <dan@spiderweblabs.com) on 2006-12-06 
         // look for any ranges this might overlap and remove, size or split where necessary 
         foreach ($this->_colinfo as $key => $colinfo) 
@@ -834,7 +834,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $last_row     last row in the selected quadrant
     * @param integer $last_column  last column in the selected quadrant
     */
-    function setSelection($first_row,$first_column,$last_row,$last_column)
+    public function setSelection($first_row,$first_column,$last_row,$last_column)
     {
         $this->_selection = array($first_row,$first_column,$last_row,$last_column);
     }
@@ -850,7 +850,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *                     3 => Leftmost column visible
     *                     4 => Active pane
     */
-    function freezePanes($panes)
+    public function freezePanes($panes)
     {
         $this->_frozen = 1;
         $this->_panes  = $panes;
@@ -867,7 +867,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *                     3 => Leftmost column visible
     *                     4 => Active pane
     */
-    function thawPanes($panes)
+    public function thawPanes($panes)
     {
         $this->_frozen = 0;
         $this->_panes  = $panes;
@@ -878,7 +878,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access public
     */
-    function setPortrait()
+    public function setPortrait()
     {
         $this->_orientation = 1;
     }
@@ -888,7 +888,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access public
     */
-    function setLandscape()
+    public function setLandscape()
     {
         $this->_orientation = 0;
     }
@@ -899,7 +899,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param integer $size The type of paper size to use
     */
-    function setPaper($size = 0)
+    public function setPaper($size = 0)
     {
         $this->_paper_size = $size;
     }
@@ -912,7 +912,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param string $string The header text
     * @param float  $margin optional head margin in inches.
     */
-    function setHeader($string,$margin = 0.50)
+    public function setHeader($string,$margin = 0.50)
     {
         if (strlen($string) >= 255) {
             //carp 'Header string must be less than 255 characters';
@@ -929,7 +929,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param string $string The footer text
     * @param float  $margin optional foot margin in inches.
     */
-    function setFooter($string,$margin = 0.50)
+    public function setFooter($string,$margin = 0.50)
     {
         if (strlen($string) >= 255) {
             //carp 'Footer string must be less than 255 characters';
@@ -945,7 +945,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param integer $center the optional value for centering. Defaults to 1 (center).
     */
-    function centerHorizontally($center = 1)
+    public function centerHorizontally($center = 1)
     {
         $this->_hcenter = $center;
     }
@@ -956,7 +956,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param integer $center the optional value for centering. Defaults to 1 (center).
     */
-    function centerVertically($center = 1)
+    public function centerVertically($center = 1)
     {
         $this->_vcenter = $center;
     }
@@ -967,7 +967,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param float $margin The margin to set in inches
     */
-    function setMargins($margin)
+    public function setMargins($margin)
     {
         $this->setMarginLeft($margin);
         $this->setMarginRight($margin);
@@ -981,7 +981,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param float $margin The margin to set in inches
     */
-    function setMargins_LR($margin)
+    public function setMargins_LR($margin)
     {
         $this->setMarginLeft($margin);
         $this->setMarginRight($margin);
@@ -993,7 +993,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param float $margin The margin to set in inches
     */
-    function setMargins_TB($margin)
+    public function setMargins_TB($margin)
     {
         $this->setMarginTop($margin);
         $this->setMarginBottom($margin);
@@ -1005,7 +1005,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param float $margin The margin to set in inches
     */
-    function setMarginLeft($margin = 0.75)
+    public function setMarginLeft($margin = 0.75)
     {
         $this->_margin_left = $margin;
     }
@@ -1016,7 +1016,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param float $margin The margin to set in inches
     */
-    function setMarginRight($margin = 0.75)
+    public function setMarginRight($margin = 0.75)
     {
         $this->_margin_right = $margin;
     }
@@ -1027,7 +1027,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param float $margin The margin to set in inches
     */
-    function setMarginTop($margin = 1.00)
+    public function setMarginTop($margin = 1.00)
     {
         $this->_margin_top = $margin;
     }
@@ -1038,7 +1038,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param float $margin The margin to set in inches
     */
-    function setMarginBottom($margin = 1.00)
+    public function setMarginBottom($margin = 1.00)
     {
         $this->_margin_bottom = $margin;
     }
@@ -1050,7 +1050,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $first_row First row to repeat
     * @param integer $last_row  Last row to repeat. Optional.
     */
-    function repeatRows($first_row, $last_row = null)
+    public function repeatRows($first_row, $last_row = null)
     {
         $this->title_rowmin  = $first_row;
         if (isset($last_row)) { //Second row is optional
@@ -1067,7 +1067,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $first_col First column to repeat
     * @param integer $last_col  Last column to repeat. Optional.
     */
-    function repeatColumns($first_col, $last_col = null)
+    public function repeatColumns($first_col, $last_col = null)
     {
         $this->title_colmin  = $first_col;
         if (isset($last_col)) { // Second col is optional
@@ -1086,7 +1086,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $last_row  Last row of the area to print
     * @param integer $last_col  Last column of the area to print
     */
-    function printArea($first_row, $first_col, $last_row, $last_col)
+    public function printArea($first_row, $first_col, $last_row, $last_col)
     {
         $this->print_rowmin  = $first_row;
         $this->print_colmin  = $first_col;
@@ -1100,7 +1100,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access public
     */
-    function hideGridlines()
+    public function hideGridlines()
     {
         $this->_print_gridlines = 0;
     }
@@ -1110,7 +1110,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access public
     */
-    function hideScreenGridlines()
+    public function hideScreenGridlines()
     {
         $this->_screen_gridlines = 0;
     }
@@ -1121,7 +1121,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param integer $print Whether to print the headers or not. Defaults to 1 (print).
     */
-    function printRowColHeaders($print = 1)
+    public function printRowColHeaders($print = 1)
     {
         $this->_print_headers = $print;
     }
@@ -1135,7 +1135,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param  integer $height Maximun heigth of printed area in pages
     * @see setPrintScale()
     */
-    function fitToPages($width, $height)
+    public function fitToPages($width, $height)
     {
         $this->_fit_page      = 1;
         $this->_fit_width     = $width;
@@ -1149,7 +1149,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param array $breaks Array containing the horizontal page breaks
     */
-    function setHPagebreaks($breaks)
+    public function setHPagebreaks($breaks)
     {
         foreach ($breaks as $break) {
             array_push($this->_hbreaks, $break);
@@ -1163,7 +1163,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param array $breaks Array containing the vertical page breaks
     */
-    function setVPagebreaks($breaks)
+    public function setVPagebreaks($breaks)
     {
         foreach ($breaks as $break) {
             array_push($this->_vbreaks, $break);
@@ -1177,7 +1177,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param integer $scale The zoom factor
     */
-    function setZoom($scale = 100)
+    public function setZoom($scale = 100)
     {
         // Confine the scale to Excel's range
         if ($scale < 10 || $scale > 400) {
@@ -1195,7 +1195,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param integer $scale The optional scale factor. Defaults to 100
     */
-    function setPrintScale($scale = 100)
+    public function setPrintScale($scale = 100)
     {
         // Confine the scale to Excel's range
         if ($scale < 10 || $scale > 400) {
@@ -1218,7 +1218,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param mixed   $token  What we are writing
     * @param mixed   $format The optional format to apply to the cell
     */
-    function write($row, $col, $token, $format = null)
+    public function write($row, $col, $token, $format = null)
     {
         // Check for a cell reference in A1 notation and substitute row and column
         /*if ($_[0] =~ /^\D/) {
@@ -1260,7 +1260,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @return mixed PEAR_Error on failure
     */
 
-    function writeRow($row, $col, $val, $format = null)
+    public function writeRow($row, $col, $val, $format = null)
     {
         $retval = '';
         if (is_array($val)) {
@@ -1289,7 +1289,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @return mixed PEAR_Error on failure
     */
 
-    function writeCol($row, $col, $val, $format = null)
+    public function writeCol($row, $col, $val, $format = null)
     {
         $retval = '';
         if (is_array($val)) {
@@ -1310,7 +1310,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param mixed &$format The optional XF format
     * @return integer The XF record index
     */
-    function _XF(&$format)
+    protected function _XF(&$format)
     {
         if ($format) {
             return($format->getXfIndex());
@@ -1334,7 +1334,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access private
     * @param string $data The binary data to append
     */
-    function _append($data)
+    protected function _append($data)
     {
         if ($this->_using_tmpfile) {
             // Add CONTINUE records if necessary
@@ -1358,7 +1358,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param string $cell The cell reference. Or range of cells.
     * @return array
     */
-    function _substituteCellref($cell)
+    protected function _substituteCellref($cell)
     {
         $cell = strtoupper($cell);
 
@@ -1394,7 +1394,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param string $cell The cell reference.
     * @return array containing (row, column)
     */
-    function _cellToRowcol($cell)
+    protected function _cellToRowcol($cell)
     {
         preg_match("/\$?([A-I]?[A-Z])\$?(\d+)/",$cell,$match);
         $col     = $match[1];
@@ -1425,7 +1425,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param string $plaintext The password to be encoded in plaintext.
     * @return string The encoded password
     */
-    function _encodePassword($plaintext)
+    protected function _encodePassword($plaintext)
     {
         $password = 0x0000;
         $i        = 1;       // char position
@@ -1455,7 +1455,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param bool $symbols_right
     * @param bool $auto_style
     */
-    function setOutline($visible = true, $symbols_below = true, $symbols_right = true, $auto_style = false)
+    public function setOutline($visible = true, $symbols_below = true, $symbols_right = true, $auto_style = false)
     {
         $this->_outline_on    = $visible;
         $this->_outline_below = $symbols_below;
@@ -1473,7 +1473,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @param bool $rtl
     */
-    function setRTL($rtl = true)
+    public function setRTL($rtl = true)
     {
         $this->_Arabic = ($rtl ? 1 : 0);
      }
@@ -1500,7 +1500,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param mixed   $format The optional XF format
     * @return integer
     */
-    function writeNumber($row, $col, $num, $format = null)
+    public function writeNumber($row, $col, $num, $format = null)
     {
         $record    = 0x0203;                 // Record identifier
         $length    = 0x000E;                 // Number of bytes to follow
@@ -1553,7 +1553,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param mixed   $format The XF format for the cell
     * @return integer
     */
-    function writeString($row, $col, $str, $format = null)
+    public function writeString($row, $col, $str, $format = null)
     {
         if ($this->_BIFF_version == 0x0600) {
             return $this->writeStringBIFF8($row, $col, $str, $format);
@@ -1604,7 +1604,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access public
     * @param string $encoding The encoding. Ex: 'UTF-16LE', 'utf-8', 'ISO-859-7'
     */
-    function setInputEncoding($encoding)
+    public function setInputEncoding($encoding)
     {
          if ($encoding != 'UTF-16LE' && !function_exists('iconv')) {
              $this->raiseError("Using an input encoding other than UTF-16LE requires PHP support for iconv");
@@ -1627,7 +1627,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param mixed   $format The XF format for the cell
     * @return integer
     */
-    function writeStringBIFF8($row, $col, $str, $format = null)
+    public function writeStringBIFF8($row, $col, $str, $format = null)
     {
         // If the string is Unicode and contains any "surrogate pairs" then using mb_strlen($str, 'UTF-16LE')
         // as the string length will cause a "found unreadable content" error when opening the worksheet in Excel
@@ -1685,7 +1685,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @return boolean true for success, false if row and/or col are grester
     *                 then maximums allowed.
     */
-    function _checkRowCol($row, $col)
+    protected function _checkRowCol($row, $col)
     {
         if ($row >= $this->_xls_rowmax) {
             return false;
@@ -1717,7 +1717,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $col    Zero indexed column
     * @param string  $note   The note to write
     */
-    function writeNote($row, $col, $note)
+    public function writeNote($row, $col, $note)
     {
         $note_length    = strlen($note);
         $record         = 0x001C;                // Record identifier
@@ -1777,7 +1777,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $col    Zero indexed column
     * @param mixed   $format The XF format
     */
-    function writeBlank($row, $col, $format)
+    public function writeBlank($row, $col, $format)
     {
         // Don't write a blank cell unless it has a format
         if (!$format) {
@@ -1830,7 +1830,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param mixed   $format  The optional XF format
     * @return integer
     */
-    function writeFormula($row, $col, $formula, $format = null)
+    public function writeFormula($row, $col, $formula, $format = null)
     {
         $record    = 0x0006;     // Record identifier
 
@@ -1908,7 +1908,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param mixed   $format The cell format
     * @return integer
     */
-    function writeUrl($row, $col, $url, $string = '', $format = null)
+    public function writeUrl($row, $col, $url, $string = '', $format = null)
     {
         // Add start row and col to arg list
         return($this->_writeUrlRange($row, $col, $row, $col, $url, $string, $format));
@@ -1916,7 +1916,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
 
     /**
     * This is the more general form of writeUrl(). It allows a hyperlink to be
-    * written to a range of cells. This function also decides the type of hyperlink
+    * written to a range of cells. This public function also decides the type of hyperlink
     * to be written. These are either, Web (http, ftp, mailto), Internal
     * (Sheet1!A1) or external ('c:\temp\foo.xls#Sheet1!A1').
     *
@@ -1932,7 +1932,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @return integer
     */
 
-    function _writeUrlRange($row1, $col1, $row2, $col2, $url, $string = '', $format = null)
+    protected function _writeUrlRange($row1, $col1, $row2, $col2, $url, $string = '', $format = null)
     {
 
         // Check for internal/external sheet links or default to web link
@@ -1962,7 +1962,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param mixed   $format The cell format
     * @return integer
     */
-    function _writeUrlWeb($row1, $col1, $row2, $col2, $url, $str, $format = null)
+    protected function _writeUrlWeb($row1, $col1, $row2, $col2, $url, $str, $format = null)
     {
         $record      = 0x01B8;                       // Record identifier
         $length      = 0x00000;                      // Bytes to follow
@@ -2022,7 +2022,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param mixed   $format The cell format
     * @return integer
     */
-    function _writeUrlInternal($row1, $col1, $row2, $col2, $url, $str, $format = null)
+    protected function _writeUrlInternal($row1, $col1, $row2, $col2, $url, $str, $format = null)
     {
         $record      = 0x01B8;                       // Record identifier
         $length      = 0x00000;                      // Bytes to follow
@@ -2088,7 +2088,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param mixed   $format The cell format
     * @return integer
     */
-    function _writeUrlExternal($row1, $col1, $row2, $col2, $url, $str, $format = null)
+    protected function _writeUrlExternal($row1, $col1, $row2, $col2, $url, $str, $format = null)
     {
         // Network drives are different. We will handle them separately
         // MS/Novell network drives and shares start with \\
@@ -2218,7 +2218,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param bool    $hidden The optional hidden attribute
     * @param integer $level  The optional outline level for row, in range [0,7]
     */
-    function setRow($row, $height, $format = null, $hidden = false, $level = 0)
+    public function setRow($row, $height, $format = null, $hidden = false, $level = 0)
     {
         $record      = 0x0208;               // Record identifier
         $length      = 0x0010;               // Number of bytes to follow
@@ -2271,7 +2271,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeDimensions()
+    protected function _storeDimensions()
     {
         $record    = 0x0200;                 // Record identifier
         $row_min   = $this->_dim_rowmin;     // First row
@@ -2298,7 +2298,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeWindow2()
+    protected function _storeWindow2()
     {
         $record         = 0x023E;     // Record identifier
         if ($this->_BIFF_version == 0x0500) {
@@ -2357,7 +2357,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeDefcol()
+    protected function _storeDefcol()
     {
         $record   = 0x0055;      // Record identifier
         $length   = 0x0002;      // Number of bytes to follow
@@ -2383,7 +2383,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *                4 => Option flags.
     *                5 => Optional outline level
     */
-    function _storeColinfo($col_array)
+    protected function _storeColinfo($col_array)
     {
         if (isset($col_array[0])) {
             $colFirst = $col_array[0];
@@ -2436,7 +2436,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param array $array array containing ($rwFirst,$colFirst,$rwLast,$colLast)
     * @see setSelection()
     */
-    function _storeSelection($array)
+    protected function _storeSelection($array)
     {
         list($rwFirst,$colFirst,$rwLast,$colLast) = $array;
         $record   = 0x001D;                  // Record identifier
@@ -2477,7 +2477,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeMergedCells()
+    protected function _storeMergedCells()
     {
         // if there are no merged cell ranges set, return
         if (count($this->_merged_ranges) == 0) {
@@ -2509,7 +2509,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access private
     * @param integer $count The number of external sheet references in this worksheet
     */
-    function _storeExterncount($count)
+    protected function _storeExterncount($count)
     {
         $record = 0x0016;          // Record identifier
         $length = 0x0002;          // Number of bytes to follow
@@ -2528,7 +2528,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @access private
     * @param string $sheetname The name of a external worksheet
     */
-    function _storeExternsheet($sheetname)
+    protected function _storeExternsheet($sheetname)
     {
         $record    = 0x0017;         // Record identifier
 
@@ -2565,7 +2565,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *                     3 => Leftmost column visible
     *                     4 => Active pane
     */
-    function _storePanes($panes)
+    protected function _storePanes($panes)
     {
         $y       = $panes[0];
         $x       = $panes[1];
@@ -2637,7 +2637,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeSetup()
+    protected function _storeSetup()
     {
         $record       = 0x00A1;                  // Record identifier
         $length       = 0x0022;                  // Number of bytes to follow
@@ -2698,7 +2698,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeHeader()
+    protected function _storeHeader()
     {
         $record  = 0x0014;               // Record identifier
 
@@ -2726,7 +2726,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeFooter()
+    protected function _storeFooter()
     {
         $record  = 0x0015;               // Record identifier
 
@@ -2754,7 +2754,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeHcenter()
+    protected function _storeHcenter()
     {
         $record   = 0x0083;              // Record identifier
         $length   = 0x0002;              // Bytes to follow
@@ -2772,7 +2772,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeVcenter()
+    protected function _storeVcenter()
     {
         $record   = 0x0084;              // Record identifier
         $length   = 0x0002;              // Bytes to follow
@@ -2789,7 +2789,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeMarginLeft()
+    protected function _storeMarginLeft()
     {
         $record  = 0x0026;                   // Record identifier
         $length  = 0x0008;                   // Bytes to follow
@@ -2810,7 +2810,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeMarginRight()
+    protected function _storeMarginRight()
     {
         $record  = 0x0027;                   // Record identifier
         $length  = 0x0008;                   // Bytes to follow
@@ -2831,7 +2831,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeMarginTop()
+    protected function _storeMarginTop()
     {
         $record  = 0x0028;                   // Record identifier
         $length  = 0x0008;                   // Bytes to follow
@@ -2852,7 +2852,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeMarginBottom()
+    protected function _storeMarginBottom()
     {
         $record  = 0x0029;                   // Record identifier
         $length  = 0x0008;                   // Bytes to follow
@@ -2879,7 +2879,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $last_row  Last row of the area to merge
     * @param integer $last_col  Last column of the area to merge
     */
-    function mergeCells($first_row, $first_col, $last_row, $last_col)
+    public function mergeCells($first_row, $first_col, $last_row, $last_col)
     {
         $record  = 0x00E5;                   // Record identifier
         $length  = 0x000A;                   // Bytes to follow
@@ -2906,7 +2906,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storePrintHeaders()
+    protected function _storePrintHeaders()
     {
         $record      = 0x002a;                   // Record identifier
         $length      = 0x0002;                   // Bytes to follow
@@ -2924,7 +2924,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storePrintGridlines()
+    protected function _storePrintGridlines()
     {
         $record      = 0x002b;                    // Record identifier
         $length      = 0x0002;                    // Bytes to follow
@@ -2942,7 +2942,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeGridset()
+    protected function _storeGridset()
     {
         $record      = 0x0082;                        // Record identifier
         $length      = 0x0002;                        // Bytes to follow
@@ -2962,7 +2962,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @see _storeWsbool()
     * @access private
     */
-    function _storeGuts()
+    protected function _storeGuts()
     {
         $record      = 0x0080;   // Record identifier
         $length      = 0x0008;   // Bytes to follow
@@ -3007,7 +3007,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeWsbool()
+    protected function _storeWsbool()
     {
         $record      = 0x0081;   // Record identifier
         $length      = 0x0002;   // Bytes to follow
@@ -3049,7 +3049,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeHbreak()
+    protected function _storeHbreak()
     {
         // Return if the user hasn't specified pagebreaks
         if (empty($this->_hbreaks)) {
@@ -3092,7 +3092,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeVbreak()
+    protected function _storeVbreak()
     {
         // Return if the user hasn't specified pagebreaks
         if (empty($this->_vbreaks)) {
@@ -3137,7 +3137,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeProtect()
+    protected function _storeProtect()
     {
         // Exit unless sheet protection has been specified
         if ($this->_protect == 0) {
@@ -3160,7 +3160,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storePassword()
+    protected function _storePassword()
     {
         // Exit unless sheet protection and password have been specified
         if (($this->_protect == 0) || (!isset($this->_password))) {
@@ -3191,7 +3191,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $scale_x The horizontal scale
     * @param integer $scale_y The vertical scale
     */
-    function insertBitmap($row, $col, $bitmap, $x = 0, $y = 0, $scale_x = 1, $scale_y = 1)
+    public function insertBitmap($row, $col, $bitmap, $x = 0, $y = 0, $scale_x = 1, $scale_y = 1)
     {
         $bitmap_array = $this->_processBitmap($bitmap);
         if ($this->isError($bitmap_array)) {
@@ -3243,7 +3243,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * The width and height of the cells are also variable and have to be taken into
     * account.
     * The values of $col_start and $row_start are passed in from the calling
-    * function. The values of $col_end and $row_end are calculated by subtracting
+    * public function. The values of $col_end and $row_end are calculated by subtracting
     * the width and height of the bitmap from the width and height of the
     * underlying cells.
     * The vertices are expressed as a percentage of the underlying cell width as
@@ -3269,7 +3269,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $width     Width of image frame
     * @param integer $height    Height of image frame
     */
-    function _positionImage($col_start, $row_start, $x1, $y1, $width, $height)
+    protected function _positionImage($col_start, $row_start, $x1, $y1, $width, $height)
     {
         // Initialise end cell to the same as the start cell
         $col_end    = $col_start;  // Col containing lower right corner of object
@@ -3335,7 +3335,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $col The column
     * @return integer The width in pixels
     */
-    function _sizeCol($col)
+    protected function _sizeCol($col)
     {
         // Look up the cell value to see if it has been changed
         if (isset($this->col_sizes[$col])) {
@@ -3359,7 +3359,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $row The row
     * @return integer The width in pixels
     */
-    function _sizeRow($row)
+    protected function _sizeRow($row)
     {
         // Look up the cell value to see if it has been changed
         if (isset($this->_row_sizes[$row])) {
@@ -3387,7 +3387,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param integer $rwB  Row containing bottom right corner of object
     * @param integer $dyB  Distance from bottom of cell
     */
-    function _storeObjPicture($colL,$dxL,$rwT,$dyT,$colR,$dxR,$rwB,$dyB)
+    protected function _storeObjPicture($colL,$dxL,$rwT,$dyT,$colR,$dxR,$rwB,$dyB)
     {
         $record      = 0x005d;   // Record identifier
         $length      = 0x003c;   // Bytes to follow
@@ -3462,7 +3462,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     * @param string $bitmap The bitmap to process
     * @return array Array with data and properties of the bitmap
     */
-    function _processBitmap($bitmap)
+    protected function _processBitmap($bitmap)
     {
         // Open file.
         $bmp_fd = @fopen($bitmap,"rb");
@@ -3546,7 +3546,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeZoom()
+    protected function _storeZoom()
     {
         // If scale is 100 we don't need to write a record
         if ($this->_zoom == 100) {
@@ -3564,7 +3564,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     /**
     * FIXME: add comments
     */
-    function setValidation($row1, $col1, $row2, $col2, &$validator)
+    public function setValidation($row1, $col1, $row2, $col2, &$validator)
     {
         $this->_dv[] = $validator->_getData() .
                        pack("vvvvv", 1, $row1, $row2, $col1, $col2);
@@ -3575,7 +3575,7 @@ class Spreadsheet_Excel_Writer_Worksheet extends Spreadsheet_Excel_Writer_BIFFwr
     *
     * @access private
     */
-    function _storeDataValidity()
+    protected function _storeDataValidity()
     {
         $record      = 0x01b2;      // Record identifier
         $length      = 0x0012;      // Bytes to follow