problem <description> => The user `<user>' <description>.
ok <tty> <lastactivity> =>..invites <user> (<tty>, idle for ..)..
and Blight will respond as shown. <tty> need not be an actual
- terminal name; <lastactivity> must be a decimal time_t).
+ terminal name; <lastactivity> must be a decimal absolute time_t).
:who
who [<nick>]