Symbolic Constants and Status Values

The GRP package has associated with it various symbolic constants defining such things as the required length of various character variables, an invalid GRP identifier value, etc. These values consist of a name of up to 5 characters prefixed by ``GRP__'' (note the double underscore), and can be made available to an application by including the line:

      INCLUDE 'GRP_PAR'

Another set of symbolic constants is made available by the statement:

      INCLUDE 'GRP_ERR'

These values have the same format of those contained in GRP_PAR, but define error conditions which can be generated within the GRP package. Applications can compare the STATUS argument with these values to check for specific error conditions. These values are described in appendix .