Adding <aside> to the WYSIWYG
I'm trying to add the aside
tag to the WYSIWYG, just like you can add a blockquote. (Basically have a button to wrap the element in an aside
tag)
I can't seem to find out how to add it by programming means, and things like the plugin Advanced TinyMCE doesn't seem to contain the option.
So how can I add a custom tag to the WYSIWYG?