These are the call scripts for making virtual circuits.
There are two types: those in lower case are call programs
that should be run by NNcall and are described by acscall(1)
(make them using the global Makefile: "make CALLER=<name> caller");
those starting with the letters MCVAX are call programs received
from Doug Kinston at "mcvax".

His program MCVAXcall.c implements a much simpler call script
that is interpreted at run time, and can more easily be changed.
See MCVAXcall.ex for an example. MCVAXd.c and MCVAXtcp.c are for
making TCP/IP virtual circuits, and MCVAXlogin.c is an alternative
login shell for the network.
