Discussion on wp-hackers centering around a simpler api for creating simple buttons. Otto: There’s an example to add a quick button to TinyMCE at: http://tinymce.moxiecode.com/examples/example_20.php To do this in a WP plugin, you’d hook to mce_buttons_2 (or 3, or 4) to add your button to the list. Then you’d hook up a filter on tiny_mce_before_init…