Hello Auge,

The question: Your implementation does not contain buttons for inserting the bb-codes.

Yes, because each admin can edit the template and can add something like

<dt id="rtl" title="RTL">RTL</dt>
<dd>Right to left</dd>

Wouldn't it be nice to make the feature more visible by providing buttons for it?

Sure...

element {
text-align: right;
text-align: end;
}

I implemented this change in my theme and according to my observations it works flawless.

I don't have experience in this area to evaluate your suggestion.

/Micha