Job Control File FS numbers

$jcf startno -size

This command replaces the Job Control File (.JCF).  It is created on launch to specify the FS numbers in use for the job.

The parameters on this command are used as follows:

startnoThe filename (with .FS extension) of the first file launched
sizeThe number of items in the job (negative)

If the V7_JCF variable is present and non-empty, this command is not used and a legacy .JCF file is written containing all FS numbers.

Do not modify this command.