I've always wondered this so I've finally going to ask.

When you have a multi-line textbox on a form, is it possible to make the Tab
key actually insert a tab character into the textbox instead of moving the
focus on to the next control in the form? Ive made a form with a rich text
control on it. My users can't seem to understand that the tab key shifts the
focus instead of indenting. Anyone solved this problem?