Shift + Ctrl + U also work for underline!
Try to underline in your comment.

Also Ctrl+b to make bold & Ctrl+i to italicise
And I've just found out that Ctrl+k enables you to insert a link!
These are of more use in the basic messaging pane when you don't want to open the full-function editor. That's if you're sending a message from a member's profile page.
Just try to underline in your comment!
I mean, when posting a New Topic, we have a wide array of options at our disposal.
Why aren't all those options allowed at comments, as well?
It's really boring to have to:
When I could simply: