CloseFiles is (yet another) utility for closing any open files which may have been left behind.
The advantage of this one over some of the existing closefile utilities is
that !CloseFiles can optionally suppress common files such as fonts or
system devices, thus giving a cleaner and simpler listing.
It's very simple and basic, just giving the file number, filename and a
'close' button. I wrote it to aid myself when programming, but thought I'd
release it in case anyone else finds it useful.