4.4BSD/usr/src/contrib/mh-6.8/miscellany/mtrenv/mhbox/ap.debug

%<{error}%{error}:%|%<(mymbox{text})%|not %>my mbox:%> %{text}
pers=%(putstr(pers{text})) mbox=%(putstr(mbox{text})) host=%(putstr(host{text}))
path=%(putstr(path{text})) note=%(putstr(note{text}))
type=%(putnum(type{text})) nohost=%(putnum(nohost{text}))
ingrp=%(putnum(ingrp{text})) gname=%(putstr(gname{text}))
proper=%(putstr(proper{text}))
friendly=%(putstr(friendly{text}))