virtual loadable module

from The Free On-line Dictionary of Computing (8 July 2008)

Virtual Loadable Module

   <networking> (VLM) {Novell}'s term for software modules that
   can be dynamically loaded to extend the functionality of the
   "VLM" {NetWare Requester} for {MS-DOS} that became standard
   beginning with {Novell NetWare} 4.

   (1995-01-11)