The text read off it
[02.06.10]
Examples
A tape to be assigned to the first available unit on channel A is specified in the SPECIF card as , UNIT1 'A(1)'
If a programmer desires to use the system output tape he would specify , UNIT1 'OU'
Note, that in this case (also for 'IN') included options for density, opening and closing are non-effective.
Additional and more complete information concerning unit assignment will be found in section 03.
[, {LOW }]
{HIGH}
LOW and HIGH specify the density of the tape. Density is assumed as HIGH if no specification is made.
[, DEFER]
This option may be exercised for files which are not required when processing is begun. Unless DEFER is specified the file must be mounted before program processing commences.
[, OPENW]
OPENW specifies that the file is not to be rewound before opening. If OPENW is not specified the file will be rewound prior to being opened.
[, OPENF]
OPENF specifies that this standard labeled file is to be found on a multi-file reel by searching forward until labeling information indicates that the proper file has been found. If this option is selected without the selection of the OPENW option the tape is rewound before searching. When OPENW and OPENF are both selected, the programmer must insure two things:
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- the tape is positioned before a header label; and
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- the labeled file to be searched for is further down the tape.
If the user desires that a file not be rewound and unloaded when it is closed he may exercise one of these options.
[, {CLOSER }]
{CLOSEW}
CLOSER specifies that the file is only to be rewound upon closing. CLOSEW specifies that the file is not to be rewound upon closing.