Everything in here which does not begin with the letter "n"
represents Yale's APL interpreter as I received it.
The sole exception is the list of functions in a2.c, which
I found it necessary to prepend with &'s before it would
compile.
The files beginning with "n" represent replacements for those
files without the "n".   The changes to everything but "tab.c" are
necessary for ASCII terminals which are not APL terminals, so
that + and - signs mean somehting.  Also uniary minus was made
to be a ` (backwards apostrophe).  It has to be unique from -.
"ntab.c" is one man's attempt to redefine the
operators to something a little saner than "tab.c".  It is
by no means complete, but the comments will tell you how
to continue to change it to suit yourself.
