Windows 3.1

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

Windows 3.1

   <operating system> A version of {Microsoft Windows} with many
   improvements over {Windows 3.0}, including {True Type Fonts},
   {Object Linking and Embedding} (OLE) and {Mouse Trails} for
   use with {LCD} Devices.  It also saw the loss of {Real Mode},
   which meant it would no longer run on {Intel 8086} processors
   (did anyone ever do this anyway?).

   Sometimes described as "stand-alone Windows", in contrast to
   {Windows for Workgroups 3.1}.  {Windows 3.11} is a free
   bug-fix update.  3.1's successors are {Windows 95} and
   {Windows NT}.

   (1996-07-08)