Library /sys$common/syshlp/mailhelp.hlb PRINT, Qualifiers, /QUEUE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /QUEUE=queue-name

    The name of the queue to which the message is to be sent. If
    the /QUEUE qualifier is not specified, the message is sent to
    the default queue specified with the SET QUEUE command or to
    the SYS$PRINT queue. If you enter the PRINT command more than
    once and specify a different queue name, any previously queued
    messages are released to the previously specified print queue.