VMS Help LSEDIT, Command Qualifiers, /JOURNAL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  /JOURNAL (D)
  /JOURNAL[=file-name]
  /NOJOURNAL

  Enables journaling for the editing  session.   The  /JOURNAL  qualifier
  without  any  value  enables buffer change journaling only.  One buffer
  change journal file is created for each editing buffer.   The  name  of
  each  buffer  change journal file corresponds to the name of the buffer
  that it is journaling.  The default file type for buffer change journal
  files is .TPU$JOURNAL.

  If a file name is supplied as the value to the /JOURNAL qualifier, then
  keystroke  journaling  is  also  performed.   The name of the keystroke
  journal  file  is  taken  from  the  value  supplied  to  the  /JOURNAL
  qualifier.   There  is  one  keystroke  journal  file  for  the editing
  session.  The default file type for keystroke journal files is .TJL.

  To perform a recovery using a  buffer  change  journal  file,  use  the
  RECOVER  BUFFER  command  after  the  editor has been started.  Use the
  /RECOVER command line qualifier only when attempting to recover using a
  keystroke  journal  file.  If a recovery operation is performed using a
  keystroke journal file, care must  be  taken  to  restore  the  editing
  environment  to  the  state  that  it was in when the journaled editing
  session began.

  If you do not want to create a journal file of  either  type,  use  the
  /NOJOURNAL qualifier.