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Compound Symbols

The limits on the symbol name (pre-substitution) and the derived name (post-substitution) of a compound symbol and on the value that a compound symbol may take are the same as the limits for the name and value of a regular variable.

You must treat the environmental variables of the CA OPS/MVS product as compound symbols. For example, if you have defined the variable SYSID in a rule and you refer to MSG.SYSID elsewhere, the SYSID part of MSG.SYSID is interpreted as the content of the previously defined variable of the same name.