On Sun, 1 Dec 2013 18:15:04 -0600, Ed Gould wrote:
>
>I remember distinctly that UID's were limited to 7 characters.
>One of the reasons was that UADS had a directory of 8 characters and
>the 8th character was reserved for UID's needing more space in UADS
>so a character was reserved (shaky here but the 8th character was
>either 0, 1 2 etc) to allow more space ...
>
>UID was 7 characters.
>The eighth was reserved for UADS as either 0 thru 8
> 
I've heard further that while UADS is a very ordinary PDS, updates
are performed in place to reduce the need for compress.  As a
consequence, an existing member can't be extended except by
allocating an extension member.

-- gil

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