----------------------<snip>-----------------
From what I've seen in looking at various bits and pieces of source
code, PL/S or its replacement(s) have been most heavily used in the MVS
code; not so much in OS/360, except SMP.
Do you count BSL as being PL/S? It was heavily used in OS/360, for TSO.
--------------------<unsnip>----------------------
I can't speak for that, since I've never looked at TSO source. I think
it's reasonable to add BSL to the PL/S set of languages.
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