Function: psploth
Class: highlevel
Section: graphic
C-Name: postploth
Prototype: V=GGEpD0,L,D0,L,
Help: psploth(X=a,b,expr,{flags=0},{n=0}): same as ploth, except that the
 output is a PostScript program in psfile (pari.ps by default).
Doc: same as \kbd{ploth}, except that the output is a PostScript program
 appended to the \kbd{psfile}.