Function:     GDI_MHEAD

Purpose:      Creates an image header from a GDS set for the display.

Category:     DISPLAY

File:         gdilib.c

Author:       K.G. Begeman

Use:          INTEGER GDI_MHEAD( GDI_ID ,    Input      INTEGER
                                 SET ,       Input      CHARACTER*(*)
                                 CWLO ,      Input      INTEGER
                                 CWHI )      Input      INTEGER

              GDI_MHEAD      Returns zero on success, negative on error.
              GDI_ID         Id of display.
              SET            Name of GDS set.
              CWLO           Lower coordinate word of frame.
              CWHI           Upper coordinate word of frame.

Updates:      Dec 14, 1990: KGB Document created.