Actually implementing it was very easy(hence second update that day). It just required to think something over from technical point of view. And if something is easy, there's no loss if we ever need to disable it again;)
About 'p' - it's for russian layout. So it's not 'ours' p. Anyway, I'd like to here stories about usage of this feature. I'm pretty sure players can do very imaginative things with it.