Currently I open the ‘Text’ view and do something like:
<span style=”border-bottom: 1px dotted #aaa; cursor: help;” title=”This is a tooltip”>my text</span>
This works but it isn’t mobile friendly because mobile browsers don’t support tooltips via hover. A shortcode or button would make it much easier for the average user and would allow awesome looking tooltips like the one in the link above. Let me know if there’s anything I can do to increase the odds of seeing this realized.