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Import of unmolested less-290.

                     SUMMARY OF COMMANDS

      Commands marked with * may be preceded by a number, _N.
      Notes in parentheses indicate the behavior if _N is given.

  h  H                 Display this help.
  q  :q  :Q  ZZ        Exit.

  e  ^E  j  ^N  CR  *  Forward  one line (or _N lines).
  y  ^Y  k  ^K  ^P  *  Backward one line (or _N lines).
  f  ^F  ^V  SPACE  *  Forward  one window (or _N lines).
  b  ^B  ESC-v      *  Backward one window (or _N lines).
  z                 *  Forward  one window (and set window to _N).
  w                 *  Backward one window (and set window to _N).
  d  ^D             *  Forward  one half-window (and set half-window to _N).
  u  ^U             *  Backward one half-window (and set half-window to _N).
  F                    Forward forever; like "tail -f".
  r  ^R  ^L            Repaint screen.
  R                    Repaint screen, discarding buffered input.
        ---------------------------------------------------
        Default "window" is the screen height.
        Default "half-window" is half of the screen height.
        ---------------------------------------------------
  /_p_a_t_t_e_r_n          *  Search forward for (_N-th) matching line.
  ?_p_a_t_t_e_r_n          *  Search backward for (_N-th) matching line.
  n                 *  Repeat previous search (for _N-th occurrence).
  N                 *  Repeat previous search in reverse direction.
  ESC-n             *  Repeat previous search, spanning files.
  ESC-N             *  Repeat previous search, reverse dir. & spanning files.
  ESC-u                Undo (toggle) search highlighting.
        ---------------------------------------------------
        Search patterns may be modified by one or more of:
        !  search for NON-matching lines.
        *  search multiple files.
        @  start search at first file (for /) or last file (for ?).
        ---------------------------------------------------
  g  <  ESC-<       *  Go to first line in file (or line _N).
  G  >  ESC->       *  Go to last line in file (or line _N).
  p  %              *  Go to beginning of file (or _N percent into file).
  {                 *  Go to the } matching the (_N-th) { in the top line.
  }                 *  Go to the { matching the (_N-th) } in the bottom line.
  (                 *  Go to the ) matching the (_N-th) ( in the top line.
  )                 *  Go to the ( matching the (_N-th) ) in the bottom line.
  [                 *  Go to the ] matching the (_N-th) [ in the top line.
  ]                 *  Go to the [ matching the (_N-th) ] in the bottom line.
  ESC-^F _<_c_1_> _<_c_2_>  *  Go to the _c_1 matching the (_N-th) _c_2 in the top line
  ESC-^B _<_c_1_> _<_c_2_>  *  Go to the _c_2 matching the (_N-th) _c_1 in the bottom line.
  m_<_l_e_t_t_e_r_>            Mark the current position with <letter>.
  '_<_l_e_t_t_e_r_>            Go to a previously marked position.
  ''                   Go to the previous position.
  ^X^X                 Same as '.

  :e [_f_i_l_e]            Examine a new file.
  ^X^V                 Same as :e.
  :n                *  Examine the (_N-th) next file from the command line.
  :p                *  Examine the (_N-th) previous file from the command line.
  :x                *  Examine the first (or _N-th) file from the command line.
  =  ^G  :f            Print current file name.
  V                    Print version number of "less".

  -_<_f_l_a_g_>              Toggle a command line flag [see FLAGS below].
  __<_f_l_a_g_>              Display the setting of a command line flag.
  +_c_m_d                 Execute the less cmd each time a new file is examined.

  !_c_o_m_m_a_n_d             Passes the command to $SHELL to be executed.
  |XX_c_o_m_m_a_n_d            Pipe file between current pos & mark XX to shell command.
  v                    Edit the current file with $VISUAL or $EDITOR.
        ---------------------------------------------------
                         FLAGS

        Most flags may be changed either on the command line,
        or from within less by using the - command.

  -?            Display help (from command line).
  -a            Forward search skips current screen.
  -b [_N]        Number of buffers.
  -B            Don't automatically allocate buffers for pipes.
  -c  -C        Repaint by scrolling/clearing.
  -d            Dumb terminal.
  -e  -E        Quit at end of file.
  -f            Force open non-regular files.
  -g            Don't highlight matches for previous search pattern.
  -G            Highlight ALL matches for previous search pattern.
  -h [_N]        Backward scroll limit.
  -i            Ignore case in searches.
  -I            Ignore case in searches and in search patterns.
  -j [_N]        Screen position of target lines.
  -k [_f_i_l_e]     Use a lesskey file.
  -m  -M        Set prompt style.
  -n  -N        Use line numbers.
  -o [_f_i_l_e]     Log file.
  -O [_f_i_l_e]     Log file (unconditionally overwrite).
  -p [_p_a_t_t_e_r_n]  Start at pattern (from command line).
  -P [_p_r_o_m_p_t]   Define new prompt.
  -q  -Q        Quiet the terminal bell.
  -r            Output "raw" control characters.
  -s            Squeeze multiple blank lines.
  -S            Chop long lines.
  -t [_t_a_g]      Find a tag.
  -T [_t_a_g_s_f_i_l_e] Use an alternate tags file.
  -u  -U        Change handling of backspaces.
  -V            Display the version number of "less".
  -w            Display ~ for lines after end-of-file.
  -x [_N]        Set tab stops.
  -X            Don't use termcap init/deinit strings.
  -y [_N]        Forward scroll limit.
  -z [_N]        Set size of window.