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GPORTSTK Call

stacks the viewport

CALL GPORTSTK( viewport);

where viewport is a numeric matrix or literal defined in normalized coordinates in the form

The GPORTSTK subroutine stacks the viewport defined by the matrix viewport onto the current viewport; that is, the new viewport is defined relative to the current viewport. The coordinates in use for this graphics command are world coordinates. An example of a valid statement follows:

  
    call gportstk({5 5 95 95});