Use wiki or markup code within text controls to simulate links (underline)

I would like to add "linkbuttons" or linked text to tables by underlining only certain parts of the text in a table. Wikis permit this via character codes like "_underlined_" or "*bold*"

Short of a rich-text editor, which is kind of overkill, I'd like consistent markup across controls. I see it implemented already (comma, three dashes).