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computers / comp.os.vms / ODS-5 question

ODS-5 question

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https://rocksolidbbs.com/computers/article-flat.php?id=34398&group=comp.os.vms#34398

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From: arne@vajhoej.dk (Arne Vajhøj)
Newsgroups: comp.os.vms
Subject: ODS-5 question
Date: Fri, 3 May 2024 22:00:18 -0400
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by: Arne Vajhøj - Sat, 4 May 2024 02:00 UTC

So in the file header we got:

$EQU FH2$S_RECATTR 32
$EQU FH2$W_RECATTR 20

I assume the content of those 32 bytes are what is documented in
IO Users Reference Manual as "ACP-QIO Record Attributes Area".

Fine.

But the ident area for ODS-5 record has:

$EQU FI5$S_EX_RECATTR 8
$EQU FI5$Q_EX_RECATTR 52

What does those 8 bytes contain?

Arne