Well, I've found the 'show desktop' command, and its in the program itself, and the command is really labelled 'hide', not 'show desktop' as the instructions claim. 'Show desktop' is just another way of saying 'hide', right? Duhhhhhhhh!
Sorry to have put you to so much trouble. This is a very useful site and I regret clogging it up with false goose-chases.