Function: plotpointtype
Section: graphic
C-Name: plotpointtype
Prototype: vLL
Obsolete: 2007-05-11
Help: plotpointtype(w,type): this function is obsolete; no graphing engine
 implement this functionality.
Doc: This function is obsolete and currently a no-op.

 change the type of points subsequently plotted in rectwindow $w$.
 $\var{type} = -1$ corresponds to a dot, larger values may correspond to
 something else. $w = -1$ changes highlevel plotting.
