[] Alternate routine to plvpor for setting up the viewport. This routine should be used only if the viewport is required to have a definite size in millimeters. The routine plgspa is useful for finding out the size of the current subpage.
[] xmin (PLFLT, input):[]The distance of the left-hand edge of the viewport from the left-hand edge of the subpage in millimeters.
[] xmax (PLFLT, input):[]The distance of the right-hand edge of the viewport from the left-hand edge of the subpage in millimeters.
[] ymin (PLFLT, input):[]The distance of the bottom edge of the viewport from the bottom edge of the subpage in millimeters.
[] ymax (PLFLT, input):[]The distance of the top edge of the viewport from the top edge of the subpage in millimeters.
¸plsxax, plsyax, plsvpa, API
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