Control Data Corporation 3300 Reference Manual page 51

The VALUE OF clause is used only in formats 1 and 2.
It
specifies the
values of data items used
to
identify or create the labels. A figurative
constant may be substituted for any literal in the format.
The following label field names are used to define the values of standard labels:
Tape
Mass storage
{ ::ENTIFICATION}
EDITION-NUMBER
REEL-NUMBER
t:ENTIFICATION}
{
OWNER }
OWNER-ID
RETENTION-CYCLE EDITION - N1J1VIBER
ACCESS-PRIV ACY
MODIFICATION-PRIVACY
The IDENTIFICATION or ID field is required. The specified label fields are
checked against the label record by the input-output control system. If the
physical file labels do not agree, the file is not processed. The values of
these fields must exactly match the values given as parameters on any
external file control cards. (*DEF cards, section 7. 7. 3) .
When a label is nonstandard, the VALUE OF clause is required
to define the
values of identifying data items. Each of the subject data names (data-name-4,
data-name-6, and so forth) is in the label record. The data names or literals
following IS must be in the Working-Storage Section. The data names in this
clause can be qualified but not subscripted or indexed, nor can they be
described by USAGE IS INDEX.
VALUE OF causes the following action to be taken:
Input file A label routine checks to see that the value of each label
record data name or label field is equal to the value of its
corresponding literal or data name. If any field does not
compare, the file is rejected and a request is made to
mount the correct file.
Output file The value of each label record name or label field is made
equal
to the value of its corresponding literal or data name.
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