Vplot program list, as of Feb 14 1993:

	All of these programs are self-documenting. (Run them without
	arguments, input, or output, and they print their documentation.)

	See {sep,vplot}-distr/test/vplot for EXAMPLES and tests.

Utilitites:
pldb
	Converts a (binary) vplot file into an editable ASCII form.

plas
	The inverse of pldb.

pstexpen
	A shell that uses "pspen" and "vppen" to create a stripped postscript
	file with bounding box information suitable for inclusion in
	text documents.

tube
	Tries to figure out which "pen" program is suitable for your graphics
	device, and calls it for you. (The self-doc is the self-doc of the
	pen it thinks is suitable, not of tube itself.)

vp_OverUnderAniso
vp_SideBySideIso
vp_OverUnderIso
vp_Unrotate
vp_Overlay
vp_Movie
vp_SideBySideAniso
	C-shell scripts for performing various transformations and
	combinations of vplot files.

vp_annotate
	A perl script for interactively annotating vplot files. Assumes
	the existence of the SEPlib program "Box". (If there is enough
	demand I can create a non-SEPlib "box" program.)


Filters that are installed by default (if the appropriate system libraries
are present):

ctekpen
	Tek 410X family.
gigipen
	DEC REGIS family.
lprpen
	Printronix line printers.
rtekpen
	RasterTek high-resolution color graphics displays
vppen
	The vplot filter for the virtual vplot device.
	This program, along with plas and pldb, serves as a "poor man's"
	vplot editor. By using with this program such generic options as
	erase=o, hshift, vshift, scale, frame=y, xwmin, etc, you can combine
	plots, move them around, add frames, change their size, clip them,
	etc, etc, and save the result into a new vplot file.

xtpen
	X Athena Widget Toolkit pen. The best X11 pen program.

envipen
	Envision 215 and 220 color graphics terminals. (Later called
	Lear Sieglers, I believe.)
imagpen
	Imagen laser printers.
pspen
	Postscript printers.
sunpen
	Suntools. (Not installed by default, you have to uncomment some
	lines in the GNUmakefile in the filters directory. It compiled
	under OW2, I'm not sure about OW3.)
x11pen
	Generic X11 pen program. Use xtpen if you can.
xvpen
	Sun's Xview. xtpen is preferred.
raspen
	Generic raster device. Also called "tcprpen" for Tek Color Printers
	(I believe it actually just writes a kind of GIF file) and
	"ppmpen" for "portable pix maps".
tekpen
	Tektronix 401X family. (Yes, you CAN plot raster on an old
	tek 4010... it's just slow, that's all!)
xmpen
	X Motif pen.


These last are no longer maintained at Stanford but probably still work,
or can be made to work with very little hacking:

gpspen
	For "GPS on a MASSCOMP", whatever that means!
ivpen, ivwpen
	Interviews.
newspen
	Sun NeWS.
v80pen
	11-inch Versatec plotter model V80
verspen
	Versatec 7224 plotter