On Friday, 03/12/2010 at 05:42 EST, "Schuh, Richard" <rsc...@visa.com> 
wrote:
> It must be Friday, Alan answered hastily like he was anxious to leave 
the 
> office. It is A-Z, 0-9, @,#,$

Alan did not answer hastily.  From IBM Corporate Standard C-S 3-8010-003, 
1998, "Volume Labels for Storage Devices":

"This field may
contain from one to six alphabetic and/or numeric
characters. If the volume identifier is less than six
characters, it is left-justified and the remainder is
padded with spaces. On both input and output,
the system must check this field against the value
supplied by the user. The content is permanently
assigned by the installation to identify this volume,
and is entered at label creation.
Note: Some existing systems accept a wider character
set than is permitted here, if the characters
are specified within enclosing apostrophes. Some
programs to which this standard is applicable must
maintain compatibility with these systems and are
therefore permitted this specific additional latitude."

The standard defines "alphabetic" as A-Z (actually, A, B, C, D, etc. to 
avoid confusion) and "numeric" as 0-9.

So, our existing labeling programs that allow blanks in the middle of 
labels (very annoying) and characters that aren't the same in all code 
pages (@ is one) are permitted under the grandfather clause, but they 
aren't compliant.

Alan Altmark
z/VM Development
IBM Endicott

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