procedure PrPlotData(dataName : Str255; left, top : integer);

Plots the dataName at the left, top postion.  This position will be the left, top of the plot.  The page size depends on the current page setup and can be found by calling PrGetPage.  The data window will be plotted in the same size as seen on the desktop.  Set the size using SetWindowSize and set the plot type using SetPlot.

Also see:  Print  DrawString  PrOpen  PrClose  PrNewPage