*F-Key-Functions

  F1 .....   This help screen.
  F2 .....   Save and continue.
  F3 .....   Load new file.
  F6 .....   Print Document.
  F7 .....   Mark start of block.
  F8 .....   Mark end of block.
  F9 .....   Search.

  Shift-F2 ..... Change directory.
  Shift-F6 ..... Set print parameters.
  Shift-F9 ..... Search and replace.
  Shift-F8 ..... Remove block markers.
  Shift-F10 .... Delete current text (all)
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*Other Functions

  ESC       .....  Abandon changes and exit.
  ALT-X     .....  Save changes and exit.
  Ctrl-PgUp .....  Top of file.
  Ctrl-PgDn .....  Bottom of file.
  Ctrl-L    .....  Resume search.
  Ctrl-W    .....  Write block.
  Ctrl-R    .....  Read block.
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*Search Options


     G  : Global search.
     C  : Count the replacments.
     U  : Ignore case.
     W  : Whole word.
     N  : No confirmation required.
    [n] : repeat n number of times
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