Edit.js

if (mwCustomEditButtons) {

   mwCustomEditButtons[mwCustomEditButtons.length] = {
       "imageFile": "",
       "speedTip": "Redirect",
       "tagOpen": "#REDIRECT [[",
       "tagClose": "]]",
       "sampleText": "Insert text"};

   mwCustomEditButtons[mwCustomEditButtons.length] = {
       "imageFile": "",
       "speedTip": "Strike",
       "tagOpen": "",
       "tagClose": "",
       "sampleText": "Strike-through text"};

   mwCustomEditButtons[mwCustomEditButtons.length] = {
        "imageFile": "",
       "speedTip": "Line break",
       "tagOpen": "
",
       "tagClose": "",
       "sampleText": ""};

   mwCustomEditButtons[mwCustomEditButtons.length] = {
       "imageFile": "",
       "speedTip": "Superscript",
       "tagOpen": "",
       "tagClose": "",
       "sampleText": "Superscript text"};

   mwCustomEditButtons[mwCustomEditButtons.length] = {
       "imageFile": "",
       "speedTip": "Subscript",
       "tagOpen": "",
       "tagClose": "",
       "sampleText": "Subscript text"};

   mwCustomEditButtons[mwCustomEditButtons.length] = {
       "imageFile": "",
       "speedTip": "Small",
       "tagOpen": "",
       "tagClose": "",
       "sampleText": "Small Text"};

   mwCustomEditButtons[mwCustomEditButtons.length] = {
       "imageFile": "",
       "speedTip": "Insert hidden Comment",
       "tagOpen": "",
       "sampleText": "Comment"};

   mwCustomEditButtons[mwCustomEditButtons.length] = {
       "imageFile": "",
       "speedTip": "Insert a picture gallery",

"tagOpen": "\n

• File:\n",
• File:"tagClose": "\n

",

       "sampleText": "Image:Example.jpg|Caption1\nImage:Example.jpg|Caption2"};

   mwCustomEditButtons[mwCustomEditButtons.length] = {
       "imageFile": "",
       "speedTip": "Insert block of quoted text",

"tagOpen": "

\n", "tagClose": "\n

",

       "sampleText": "Block quote"};

   mwCustomEditButtons[mwCustomEditButtons.length] = {
       "imageFile": "",
       "speedTip": "Insert a table",
       "tagOpen": '{| class="wikitable" border="1"\n|',
       "tagClose": "\n|}",
       "sampleText": "-\n! header 1\n! header 2\n! header 3\n|-\n| row 1, cell 1\n| row 1, cell 2\n| row 1, cell 3\n|-\n| row 2, cell 1\n| row 2, cell 2\n| row 2, cell 3"};

   mwCustomEditButtons[mwCustomEditButtons.length] = {
       "imageFile": "",
       "speedTip": "Insert a reference",
       "tagOpen": "",
       "sampleText": "Insert footnote text here"};

} addOnloadHook(function () {

   if (document.location.search.indexOf("undo=") != -1
       && document.getElementsByName('wpAutoSummary')[0]) {
       document.getElementsByName('wpAutoSummary')[0].value='1';
   }

})

addOnloadHook(function () {

   // needs to be deferred until the DOM has fully loaded
   var placeholder = document.getElementById("editpage-specialchars");
   if (!placeholder || window.noDefaultEdittools) return;
   var match = /(?:^| )edittools-version-(\d+)(?: |$)/.exec(placeholder.className);

   // set window.testJsEdittools = true to enable testing before full deployment
   if (!match && window.testJsEdittools)
       match = /(?:^| )edittools-version-(test\d+)(?: |$)/.exec(placeholder.className);

   if (!match) return;
   var url = wgScript + '?title=MediaWiki:Edittools.js&action=raw&ctype=text/javascript&nocache=' + match[1];
   importScriptURI(url);

});