Psignature Matching Information

scope--this pattern attribute is matched against the scope attribute in messages.

op--operation name. This name is matched against the op attribute in messages.

If you specify message signatures in both your ptype and otypes, use unique operation names in each. For example, do not specify a display operation in both your ptype and otype.

args--arguments for the operation. If the args list is void, the signature matches only messages with no arguments. If the args list is empty (that is, "()"), the signature matches without regard to the arguments.

contextdcl--context name. When a pattern with this named context is generated from the signature, it contains an empty value list.