This directory is for the bits and pieces required for remote execution
of ditroff for the UKC troff server.

This requires:

	- the unlinked .o files to make ditroff (in the directory
	  ../ditroff/trobs)

	- the standard set of remote execution parts from my RPC mechanism,
	  slightly hacked to have defaults ilke connecting to TROFFSERVER.

A remote troff is set up thusly:

The user invokes troff via the batch system.

He executes the symlink /usr/lib/ditroff/troff -> /etc/batch/baccess

The batch system goes and executes /usr/lib/batch/troff, which is a copy
	of the dorexinit program, moded thusly:
	-rwx--s---  1 root     batch        7732 Nov  3 19:24 troff

There are 4 tsb ports on the user's machine for group batch, set up in
	/etc/rc.local using /etc/ring/tsbset batch 4

The renamed dorexinit simply executes /etc/rexinit, which has global
	execute permission.

Once this has connected to the troff server, it execs /etc/rpcsrv.

On the troff server machine, you need /etc/ringsrv/rexboot, which is what
	rexinit connects to, and rexboot execs /etc/rexsrv/troff.

The directory /etc/rexsrv has mode 700.

The makefile has targets "inst-client" and "inst-server" to make and
install the parts appropriate to each type of system.

Martin Guy, UKC, October 1988