Veilleux, Jon L wrote:
Bob Shannon wrote:
Some, such as logical swap, were incorporated into MVS. Others, such as
the dual master catalog mod at a large US insurance company, proved to
be a nightmare to maintain and an even worse nightmare to remove.

AMEN Bob. Although usermods did have their up side, especially the
catalog mod. It gave a relatively new Systems Programmer a LOT of
experience coding assembler and reading standalone dumps.......before
IPCS......ouch

Open code does *NOT* mean "open for update". Of course if you want, you can modify it, but then it is *your* code, and you are expected to support it. Ergo, the rules, what is allowed for customer to modify, and what is locked could remain the same as in OCO.

BTW: I'm not open code enthusiast. I understand problems of IP rights when the code is disclosed (wasn't it a beginning of MSP system ?).

However the more documentation/description/functional diagrams/PoPs/etc the more it helps users. One of methods is to provide sources.

Just my $0.02
--
Radoslaw Skorupka
Lodz, Poland


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