MOSX username/password login from the icon view

Here's one that's simple - and then you forget, since you don't use it that often -- and then you can never find the sequence for doing it again!

You're at a standard iconic login screen and you want a username/password login instead - from which you can use ">console", ">restart", or log in as a user not otherwise shown.

Press an arrow key; it doesn't matter which. One of the icons highlights - but doesn't bring you to the next screen, where it asks for that user's password.

NOW press Option-Enter - bingo; the username/password login window.