Directories with MacLISP relevance are:
	LISP;	-- FASL and binary (dump) files for maclisp system
	L;	-- MIDAS sources for main lisp file, and for others
 	COMLAP;	-- COMpiler (with FASLAP) and LAP assembler
	LSPSRC; -- Various auxillary out-of-core files written in lisp
	NILCOM;	-- Portable LISP system software written in NIL.
	LSPMAI;	-- Bug mail and other notices.

Please follow normal reaping courtesies if necessary to reap 
any of these dirs but LISP;.

Please DO NOT delete files from the LISP; directory without
consulting JONL, RWK, or RLB.  The LISP; directory is referred to 
by programs which aren't as smart as a GFR.

If you absolutely must delete a
file, then follow these rules:
[a] Do not delete a file which is not backed up.
[b] Do not delete a file unless there is more than one
    version of it around.
[c] If there are only two versions, think twice.  If you
    must delete, delete the lower-numbered one.
[d] If there are three or more, try to preserve the version
    for the current LISP as well as the latest version (this
    usually means deleting the one in the *middle*).
Again, before deleting any files consider sending a message to
JONL, RWK, or RLB first - usually one of us in in within
twelve to eighteen hours.  Thanks.

Files whose first file name is BBLISP are binary files.
The second file name is of the form nnnxxx, where nnn is the
three digits of the version number, and xxx is a distinguishing
identifier, such as BIB for a Bibop LISP, or QIO
for a LISP with the new I/O code.
Files whose first file name is LSPTTY contain the
output by MIDAS to the tty during an assembly.  The second
file names are as above.
Most other files are source files.  Occasional random files
are put here also, whose second file names are not numeric
(e.g. this file!).