	tek - yet another tek4014 emulator
	copyright 1990 Ronald Florence

	This package creates yet another tek4014 emulator.  On a
	Xenix system with the CGI package, the Makefile will create
	tek and poly (actually a link).  Tek reads tek4014 input and
	outputs it to any CGI device.  Poly reads ascii integer or
	floating point xy points.  Using the SCO CGI devices, we
	have successfully used tek and poly with a VGA, EGA, and CGA
	display, HP 7470a plotter, Laserjet, Deskjet, Epson
	printers, and a Postscript printer.  To use the CGI drivers,
	make sure you have the CGIPATH and CGIDISP or CGIPRNT
	environmental variables declared.  Tek and poly also
	recognize and work correctly with a Wyse wy99gt terminal

	Command line options:
	   Invoked as "tek":
	      -w  reads Accu-Weather maps
	   Invoked as "poly":
	      -s  read xmin, ymin, xmax, ymax scaling points first 
		  (default is 4096 x 3120)
	   Both:
	      -p  use plotter or printer device for output 
		  (default is to use the display device)
	      -a  preserve aspect ratio

	The heart of the code is tekdecode.c, which has been written
	so that simple changes to tek4.h will adapt the emulator to
	devices other than CGI.  A tek4.h header file for the
	Hewlett-Packard HP7470a plotter is included as a sample.
	Tekdecode.c has also been successfully adapted to drive an
	Epson printer directly.

	Permission is hereby granted for unlimited non-commercial
	use of these programs, on condition that the copyright
	notices are left intact and any modifications to the source
	code are noted as such.  No warranty of any kind is implied
	or granted for this material.

	Ronald Florence			
	Maple Lawn Farm, Stonington, CT	
	ron@mlfarm.uu.net
	{yale,uunet}!hsi!mlfarm!ron
