Library /sys$common/syshlp/helplib.hlb  —  RTL Routines, SMG$  SMG$CREATE_VIEWPORT
    The Create a Virtual Viewport routine creates a viewport and
    associates it with a virtual display. The location and size of
    the viewport are specified by the caller.

    Format

      SMG$CREATE_VIEWPORT  display-id ,viewport-row-start

                           ,viewport-column-start

                           ,viewport-number-rows

                           ,viewport-number-columns
Additional Information: explode extract
Returns Arguments
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