Function:     GDI_FRAME

Purpose:      Obtains info about frame currently on display.

Category:     DISPLAY

File:         gdilib.c

Author:       K.G. Begeman

Use:          INTEGER GDI_FRAME( GDI_ID ,       Input     INTEGER
                                 FLO ,          Output    REAL ARRAY
                                 FHI )          Output    REAL ARRAY

              GDI_FRAME      Returns zero on success, negative on error.
              GDI_ID         Id of display.
              FLO            Contains lower X and Y grids of displayed image.
              FHI            Contains upper X and Y grids of displayed image.

Updates:      Nov 27, 1991: KGB, Document created.