LU is one of the early tools for the management of Novosielski library
files (i.e. the .LBR files common in the CP/M world).

I do not remember ever seeing the source code for a CP/M library tool that
runs on CP/M.  However there were compatible tools written for UNIX and 
MSDOS.

This program is just a back-port from linux to CP/M.  I modified the source
to compile with Hi-Tech C.  It compiles cleanly under CP/M and also on linux
with the gcc toolset.

I am a firm believer in having source code for things that I use so if ever
the need should arise, I can fix or enhance them.  This program represents
one small step in the right direction.

It doesn't mean that I abandon tools such as delbr or nulu for which I lack
source code but it does mean that I am not dependent on them.

Jon Saxton
tesseract@triton.vg
22 Jul 2014