pstart:

Synopsis: Create a plot-window.

Syntax: pstart ( NCOL , NROW , DEVICE )

Description:

	Create a plot-window. The newly created plot-windown becomes
	the current plot-window with NCOLxNROW sub-plots. DEVICE
	specifies the output device type. If DEVICE is not specified,
	then the user is provided with a menu of options. All
	arguments are optional. his function MUST be used before any
	plotting can occur. If you do not use pstart() before
	attempting to plot, then you will be prompted for the device
	type. 
