[purple_pixie]

Is there any chance of someone explaining / tutorialising the callback stuff?

IIRC you do something fancy with making a callback handle with a function name, and then passing that in, but the bit I don't really get is how to, say, remove options for a player.

If I took the time and trouble I'm sure I could learn this jazz, but I'm fairly sure someone already has, and isn't that the point of Snippets/Tutorials?

Generally I create / destroy a menu every time it is used, but at times it is useful to adjust a menu on the fly.