Function:     X11DRV

Purpose:      The X11 graphics driver for the GIPSY plot system.

Category:     GRAPHICS

File:         pgdriv.src

Author:       K.G. Begeman

Use:          CALL X11DRV( IDEV ,     Input/Output    INTEGER
                           IFUNC ,       Input        INTEGER
                           RBUF ,     Input/Output    REAL ARRAY
                           NBUF ,     Input/Output    INTEGER
                           CHR ,      Input/Output    CHARACTER*(*)
                           LCHR )     Input/Output    INTEGER

              IDEV       Device identifier.
              IFUNC      Operation code which specifies what operation
                         the device handler is to perform. (see the
                         programmers guide.)
              RBUF       Floating-point array used to pass numerical
                         data to or from the device handler.
              NBUF       Indicates how many elements of RBUF are used.
              CHR        Used to pass character data to or from the
                         device handler.
              LCHR       Indicates how many characters are used.

Updates:      Sep  5, 1993: KGB Document created.