Depends on the audience. With of troy's newbie seniors class, it doesn't really matter what you call the action (select > highlight > paint). Most of your time will be taken up, as she states, by trying to teach the action itself. It's seems best to use a consistent and standard vocabulary so the students can integrate into the general computer population. Anyway, this is how I feel after nearly two decades of tech writing and IT / tech comm meetings, but my views have been tainted by all those meetings and their futile, feeble agendas. Oh, the time we spent on select, choose, click (on), double-click, deselect, etc., and don't get me started on the punctuation of bulleted lists ...

Ceci n'est pas un seing.