Usage: /away [blurb]
/away sets your status to "away". This tells other lily users that you are not
at your terminal and may not respond immediately or that you are busy with other
things. After about two hours of being idle lily defaults to setting you "away"
and tells other users that you have "idled away".
/away optionally takes a blurb; it will set the blurb before marking you as
"away".
(see also: here, detach, blurb and idle)