the subscript syntax, just place a button image into the lib/images/toolbar folder and add the following code to conf/userscript.js:
<code php>if(toolbar){
to... };
}
</code>
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If anyone knows a way to insert a button instead of adding it at the end w... 'icon' => 'italic.png',
...</code>
To add a button which inserts the text “Hi there”, a... laying around with it, cacheing was tricky. I had to keep manually deleting the cached version of the