Use GPIS to insert a Set Interior Style structure element into the open structure following the element pointer or to replace the element pointed at by the element pointer with a Set Interior Style structure element depending on the current edit mode.
This structure element specifies the way the graPHIGS API draws the interior of a polygon at structure traversal time when rendering all subsequent polygon (fill area) primitives. The graPHIGS API uses this style value when the interior style aspect source flag is set to 2=INDIVIDUAL
The traversal default for interior style is 1=HOLLOW
If the workstation does not support the specified interior style, then the interior style defaults to 1=HOLLOW