--------------------------------<snip>--------------------------------
So I am working at cataloging my collection of older IBM documents,
and came across:
2540 Card Read Punch Parts Catalog (121-0545-3)
Picky question - can I assume that there should be an S prefixing the
document number, as in S121-0545-3? I have noticed that my other S/360
(and later) Parts Catalogs are S(something). Did IBM just forget the S
when typesetting? Do they imply it? Is there significance to the
missing S?
I need to know where to file it!
Thanks much...
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If I remember correcvtly, here's what the prefixes meant:
G -- Generally available. Customers could get some number of this manual
for free
S -- "SELL" manual. Customers could BUY this manual if they desired a
copy or two, or however many.
Y -- Program Logic. Customers got a single free copy when they had the
product.
Hardware manuals were provided when you installed the hardware,
regardless of any prefix value. IIRC,
most of the S/360-related hardware books were "G" prefixed.
Rick
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