Something
public text v1 · immutablealias away {
set %myaway.reason $1-
set %myaway.time $ctime
amsg 12[4GLOBAL12] --- 7I am away -- %myaway.reason $+ . Left at $time $+ .
}
alias back {
amsg 12[4GLOBAL12] --- 7I am back from %myaway.reason $+ . I was gone for $duration($calc($ctime - [ %myaway.time ] )) $+ .
unset %myaway.reason
unset %myaway.time
}