The Language-Sensitive Editor (LSE) is a multilanguage advanced  text
  editor designed specifically for software development.

  LSE is invoked with command line of the following form:

       LSEDIT [/qualifier] [file-spec]

           /qualifier

              specifies LSEDIT command line qualifiers

           file-spec

              specifies  the  file  to  be  edited.  LSE reads the
              file into a buffer.  The name of the buffer is taken
              from the file name and type specified. The file name
              and type must be a valid VMS file specification.

  The file type determines the language for the buffer.   For  example,
  .FOR  specifies  the  FORTRAN language and .PAS specifies PASCAL.  If
  you omit the file type, or specify a file type  unknown  to  VMS,  no
  language is assumed.

  To simplify editing, LSE binds  commonly  used  commands  to  certain
  keys,  and  provides access to both EDT and EVE keypads.  By default,
  LSE is initiated in EDT-keypad mode.  You can get  help  on  keys  by
  pressing the HELP key, marked HELP or PF2.

  You can enter a single command by typing the  GOLD-COMMAND  (PF1-KP7)
  key sequence or pressing DO to get an "LSE Command>" prompt, entering
  the command, and terminating the  command  with  a  carriage  return.
  Multiple commands may be entered by pressing CTRL/Z to get the "LSE>"
  prompt, entering the command, and  terminating  the  command  with  a
  carriage  return.   The  editor  will continue to prompt for commands
  using the "LSE>" prompt until the user presses CTRL/Z again.

  New users may type "HELP Features" for tutorial information.