DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   Boxer
      1. <language> A visual language by Hal Abelson and Andy
      diSessa of Berkeley which claims to be the successor to
      Logo.  Boxes are used to represent scope.
      2. <tool> A text editor for MS-DOS and Microsoft
    Windows.
      (http://boxersoftware.com/users/dhamel).
      (2001-04-30)