Ok, so they are 4 keys on my keyboard I know absolutely no use of: "wakeup" key -- when any key wakes machine up, "power" key, which just duplicates "sleep" key, "scroll lock" and "pause". The first two are slightly non-standard, but surely there should be some use for scroll lock and pause in X (those are present even on notebook)? But it seems there is none. Scroll lock LED is also unused. Ideas?