Spool directory for the print jobs.
The name is the DOS (not Un*x) name of this directory.
It must be placed on the first defined volume (standard name is "SYS"). This directory will be created at start time of mars_nwe. It must exist before printing.
(This is not a spool directory from system's lpd!!!)
Leaving this field empty means "standard" queuedir name (SYS:\SYSTEM\queueid.QDR).