How to Modify the TinyMCE Editor

tinyButtonConfig.php

<?php

    //create email template
    $buttonConfigs['default'] = array(
        'buttonConfig' => "code,help,separator,bold,italic,underline,strikethrough,separator,justifyleft,justifycenter,justifyright,
                            justifyfull,separator,forecolor,backcolor,separator,styleselect,formatselect,fontselect,fontsizeselect,",
        'buttonConfig2' => "cut,copy,paste,pastetext,pasteword,selectall,separator,search,replace,separator,bullist,numlist,separator,outdent,
                            indent,separator,ltr,rtl,separator,undo,redo,separator, link,unlink,anchor,image,separator,sub,sup,separator,charmap,
                            visualaid",
        'buttonConfig3' => "tablecontrols,separator,advhr,hr,removeformat,separator,insertdate,inserttime,separator,preview"
    );

    //Standard email compose
    $buttonConfigs['email_compose'] = array(
        'buttonConfig' => "code,help,separator,bold,italic,underline,strikethrough,separator,bullist,numlist,separator,justifyleft,justifycenter,justifyright,
                            justifyfull,separator,forecolor,backcolor,separator,styleselect,formatselect,fontselect,fontsizeselect,",
        'buttonConfig2' => "", //empty
        'buttonConfig3' => "" //empty
    );

    //Quick email compose
    $buttonConfigs['email_compose_light'] = array(
        'buttonConfig' => "code,help,separator,bold,italic,underline,strikethrough,separator,bullist,numlist,separator,justifyleft,justifycenter,justifyright,
                            justifyfull,separator,forecolor,backcolor,separator,styleselect,formatselect,fontselect,fontsizeselect,",
        'buttonConfig2' => "", //empty
        'buttonConfig3' => "" //empty
    );

tinyMCEDefaultConfig.php

<?php

    $defaultConfig = array(
        'convert_urls' => false,
        'valid_children' => '+body[style]',
        'height' => 300,
        'width'	=> '100%',
        'theme'	=> 'advanced',
        'theme_advanced_toolbar_align' => "left",
        'theme_advanced_toolbar_location' => "top",
        'theme_advanced_buttons1' => "",
        'theme_advanced_buttons2' => "",
        'theme_advanced_buttons3' => "",
        'strict_loading_mode' => true,
        'mode'	=> 'exact',
        'language' => 'en',
        'plugins' => 'advhr,insertdatetime,table,preview,paste,searchreplace,directionality',
        'elements' => '',
        'extended_valid_elements' => 'style[dir|lang|media|title|type],hr[class|width|size|noshade],@[class|style]',
        'content_css' => 'include/javascript/tiny_mce/themes/advanced/skins/default/content.css',
    );