VMS Help DTM, REVIEW, Review Subsystem, PRINT, Command Qualifiers, /SELECTED  *Conan The Librarian (sorry for the slow response - running on an old VAX)

   Concatenates all files already selected for printing and the
   currently specified file and immediately places them in the print
   queue.

   The default is to place the concatenated files in the print queue
   when you exit from the Review subsystem.