xinit - initialisation of a graphics driver
Initialisation of the given driver.
For X Window driver-name can be a string which gives the name of a display and a new graphics window is created. If the argument is omitted the value of the environment variable DISPLAY is used if it exists or the value "unix:0.0" is used.
For the Postscript, Xfig or Gif driver, driver-name is a name of the file where all the graphics operations are recorded.
Note that in Postscript case the generated file is not a complete postscript file. It should be converted using the BEpsf or Blatexpr shell programs (see printing)
driver("Pos")
xinit("foo.ps")
plot2d()
xend()
driver("X11")
J.Ph.C.