Synopsis
		sfpspen colormask= red= green= blue= ppi= dumbfat=n color=n force=n forcebw=n force_raster=y rgb=y tex=n hold=n copies=1 corners=y mono=n endpause= cachepipe= shade= wantras= window= frame= overlay= invras= txsquare= serifs= background= redpow=1.0 greenpow=1.0 bluepow=1.0 dither= greyc=1.0 pixc=1.0 txfont= txprec= txovly= xcenter= ycenter= patternmult=1. pause=0 fatmult= rotate=0 txscale=1.0 mkscale=1.0 dashscale=1.0 scale=1.0 xscale=1.0 yscale=1.0 xshift=0. yshift=0. xwmax= ywmax= xwmin= ywmin= fat=0 label= printer= paper= erase= break= interact= style= size=

output is in PostScript language; if not redirected, it is sent to
lpr -Ppostscript (override with $PSPRINTER environment variable.)

Parameters
		bool background= [y/n]   floats blue= [4]   float bluepow=1.0   string break=   bool cachepipe= [y/n]   bool color=n [y/n] use color   bools colormask= [5]   int copies=1 number of copies   bool corners=y [y/n] n - remove "corner" group.   float dashscale=1.0   int dither= dithering to improve raster display, see "man vplotraster" 0 No dither, 1 Random Dither 2 Ordered Dither 3 Minimized Average Error Method 4 Digital Halftoning   bool dumbfat=n [y/n]   bool endpause= [y/n]   string erase=   int fat=0 base line fatness   float fatmult=   bool force=n [y/n] if y, don't replace colors with their compliments   bool force_raster=y [y/n] if y, don't replace raster colors with their compliments   bool forcebw=n [y/n] if y, don't replace black and white colors with their compliments   bool frame= [y/n]   floats green= [4]   float greenpow=1.0   float greyc=1.0 "grey correction" modifies the grey scale used to display a raster to simulate the nonlinearity of displays, see "man vplotraster"   bool hold=n [y/n] tells the printer to not print the job until you add paper through the manual feed slot   string interact=   bool invras= [y/n]   string label= label for pages, default is user name and date   float mkscale=1.0   bool mono=n [y/n] no color   bool overlay= [y/n]   string paper=   float patternmult=1.   int pause=0   float pixc=1.0 "pixel correction" controls alteration of the grey scale, see "man vplotraster".   float ppi= pixels per inch   string printer= what printer to send it to   floats red= [4]   float redpow=1.0   bool rgb=y [y/n] For figures turned into GEOPHYSICS, use "rgb=no".   int rotate=0   float scale=1.0   bool serifs= [y/n]   bool shade= [y/n]   string size=   string style=   bool tex=n [y/n]   int txfont=   int txovly=   int txprec=   float txscale=1.0   bool txsquare= [y/n]   bool wantras= [y/n]   bool window= [y/n]   float xcenter=   float xscale=1.0   float xshift=0.   float xwmax=   float xwmin=   float ycenter=   float yscale=1.0   float yshift=0.   float ywmax=   float ywmin=