Name:         GRPARS

Purpose:      parse device specification string

Category:     GRAPHICS

File:         pgplot.src

Author:       T.J. Pearson

Use:          see description below.

Description:

            INTEGER FUNCTION GRPARS (SPEC,DEV,TYPE,APPEND)
            CHARACTER*(*) SPEC, DEV
            INTEGER  TYPE
            LOGICAL  APPEND
      
       GRPCKG: decode a device-specification; called by GROPEN.
      
       Returns:
        GRPARS (output): 1 if the device-specification is
             acceptable; any other value indicates an error.
      
       Arguments:
        SPEC (input): the device specification.
        DEV  (output):  device name or file spec.
        TYPE (output): device type (integer code); 0 if no device
             type is specified.
        APPEND (output): .TRUE. if /APPEND specified, .FALSE. otherwise.

Updates:      Oct 16, 1998: JPT document extracted from 5.2.0 source;
                                Fortran source copied from GIPSY's v4.9E.