! Use An Inform 5.5 library extention by L. Ross Raszewski
!
! Adds a handy USE verb.
! I don't know if this is the best way to do this, but it seems to work
[ SOnAble; if (noun has switchable && noun hasnt on) rtrue; rfalse;];
[ SOffAble; if (noun has switchable && noun has on) rtrue; rfalse;];
[ OpenUpAble; if (noun has openable && noun hasnt open) rtrue; rfalse;];
[ CloseUpAble; if (noun has openable && noun has open) rtrue; rfalse;];