[olpc-community-support] Sugar, home view, register?

[Kantarjiev]

When I'm in the home view, if I hover over the child in the middle, I see my nickname, Reboot, Shutdown, Register.

All obvious except "Register", which does nothing (as best I can tell). I can't find any mention of this in the wiki... http://wiki.laptop.org/go/Sugar_Instructions#Home_Mode helpfully says "none of this is documented" ...