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SET BLOCKSIZE Command
The SET BLOCKSIZE command sets a default blocksize (in words) for
the specified magnetic tape.
SET BLOCKSIZE dev:nnnn
Where: dev: is either the physical device name, written in
the format MTxn:, or the logical name previously
associated with the device. The device must be
assigned to your job. This argument is necessary. For
more help on device names, see the help file DEVNAM.
nnnn is a decimal number between 3 and 4094 designating
the block size for this magnetic tape. No additional
checking is done for the legality of the specified
number in addition to the check for the maximum 4094
and a minimum of 3. This argument is required.
Leaves your terminal at monitor level.
Assign the logical name WEEK2 to magnetic tape unit 4.
Set the block size of magnetic tape unit 4 to 2000.
.SET BLOCKSIZE WEEK2: 2000<RET>