Test run.
/show_window MainHUD.Memorized to bring it up.
Background image has 30 frames at 2 seconds each. Just click on where the yellow bar is and the purple marker will move to it. 60 seconds later, they will be at the same place again.
Good for timing the re-use of the Manastone.
Coming later (if it works): Multiple timers and the ability to set the duration of each one in-game.
(Attachment removed, see my third post.)