ASSIGN (PHYSICAL NAME) (LOGICAL NAME ,IF DESIRED)
	Examples:
	ASSIGN UDP	ASSIGN MTA0 LPT

The assign command will associate an IO device with your job.
It is important to use the assign command with certain devices
to guarantee your job unique access to the device.  For example,
before mounting a magnetic tape, it is wise to assign a drive.

The assign command takes an optional second argument, the 
logical name.  If your program outputs to, say, the LPT and
you want the output on a mag tape, you could  ASSIGN MTA0 LPT