(Motivated by a thread in IBM-MAIN.) I notice that the HLASM PTF level appears on the first page of every SYSPRINT.
Does this imply that there is a unique CSECT updated by every PTF? Implying that each PTF has its immediate predecessor as a PRErequisite? Implying, in turn, that the graph of service does not branch? Limiting customers' freedom of choice in service configuration? But simplifying Tech Support's chore in problem analysis? (It's possible that such a CSECT is delivered in a different ++MOD element in various PTFs as needed. I shudder (and so, I suspect, would Kurt Quackenbush) to consider the implications of RESTOREing any such PTF.) Is that PTF level available as a preset GBLC symbol? -- gil
