--- a/can.pl	Fri Oct 31 01:54:33 2008 +0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,221 +0,0 @@
-
-                   SSUUMMMMAARRYY OOFF LLEESSSS CCOOMMMMAANNDDSS
-
-      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  :Q  ZZ     Exit.
- ---------------------------------------------------------------------------
-
-                           MMOOVVIINNGG
-
-  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).
-  ESC-SPACE         *  Forward  one window, but don't stop at end-of-file.
-  d  ^D             *  Forward  one half-window (and set half-window to _N).
-  u  ^U             *  Backward one half-window (and set half-window to _N).
-  ESC-)  RightArrow *  Left  one half screen width (or _N positions).
-  ESC-(  LeftArrow  *  Right one half screen width (or _N positions).
-  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.
- ---------------------------------------------------------------------------
-
-                          SSEEAARRCCHHIINNGG
-
-  /_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:
-        ^N or !  Search for NON-matching lines.
-        ^E or *  Search multiple files (pass thru END OF FILE).
-        ^F or @  Start search at FIRST file (for /) or last file (for ?).
-        ^K       Highlight matches, but don't move (KEEP position).
-        ^R       Don't use REGULAR EXPRESSIONS.
- ---------------------------------------------------------------------------
-
-                           JJUUMMPPIINNGG
-
-  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).
-  t                 *  Go to the (_N-th) next tag.
-  T                 *  Go to the (_N-th) previous tag.
-  {  (  [           *  Find close bracket } ) ].
-  }  )  ]           *  Find open bracket { ( [.
-  ESC-^F _<_c_1_> _<_c_2_>  *  Find close bracket _<_c_2_>.
-  ESC-^B _<_c_1_> _<_c_2_>  *  Find open bracket _<_c_1_> 
-        ---------------------------------------------------
-        Each "find close bracket" command goes forward to the close bracket 
-          matching the (_N-th) open bracket in the top line.
-        Each "find open bracket" command goes backward to the open bracket 
-          matching the (_N-th) close bracket 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 '.
-        ---------------------------------------------------
-        A mark is any upper-case or lower-case letter.
-        Certain marks are predefined:
-             ^  means  beginning of the file
-             $  means  end of the file
- ---------------------------------------------------------------------------
-
-                        CCHHAANNGGIINNGG FFIILLEESS
-
-  :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.
-  :d                   Delete the current file from the command line list.
-  =  ^G  :f            Print current file name.
- ---------------------------------------------------------------------------
-
-                    MMIISSCCEELLLLAANNEEOOUUSS CCOOMMMMAANNDDSS
-
-  -_<_f_l_a_g_>              Toggle a command line option [see OPTIONS below].
-  --_<_n_a_m_e_>             Toggle a command line option, by name.
-  __<_f_l_a_g_>              Display the setting of a command line option.
-  ___<_n_a_m_e_>             Display the setting of an option, by name.
-  +_c_m_d                 Execute the less cmd each time a new file is examined.
-
-  !_c_o_m_m_a_n_d             Execute the shell command with $SHELL.
-  |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.
-  V                    Print version number of "less".
- ---------------------------------------------------------------------------
-
-                           OOPPTTIIOONNSS
-
-        Most options may be changed either on the command line,
-        or from within less by using the - or -- command.
-        Options may be given in one of two forms: either a single
-        character preceded by a -, or a name preceeded by --.
-
-  -?  ........  --help
-                  Display help (from command line).
-  -a  ........  --search-skip-screen
-                  Forward search skips current screen.
-  -b [_N]  ....  --buffers=[_N]
-                  Number of buffers.
-  -B  ........  --auto-buffers
-                  Don't automatically allocate buffers for pipes.
-  -c  ........  --clear-screen
-                  Repaint by clearing rather than scrolling.
-  -d  ........  --dumb
-                  Dumb terminal.
-  -D [_x_n_._n]  .  --color=_x_n_._n
-                  Set screen colors. (MS-DOS only)
-  -e  -E  ....  --quit-at-eof  --QUIT-AT-EOF
-                  Quit at end of file.
-  -f  ........  --force
-                  Force open non-regular files.
-  -F  ........  --quit-if-one-screen
-                  Quit if entire file fits on first screen.
-  -g  ........  --hilite-search
-                  Highlight only last match for searches.
-  -G  ........  --HILITE-SEARCH
-                  Don't highlight any matches for searches.
-  -h [_N]  ....  --max-back-scroll=[_N]
-                  Backward scroll limit.
-  -i  ........  --ignore-case
-                  Ignore case in searches that do not contain uppercase.
-  -I  ........  --IGNORE-CASE
-                  Ignore case in all searches.
-  -j [_N]  ....  --jump-target=[_N]
-                  Screen position of target lines.
-  -J  ........  --status-column
-                  Display a status column at left edge of screen.
-  -k [_f_i_l_e]  .  --lesskey-file=[_f_i_l_e]
-                  Use a lesskey file.
-  -L  ........  --no-lessopen
-                  Ignore the LESSOPEN environment variable.
-  -m  -M  ....  --long-prompt  --LONG-PROMPT
-                  Set prompt style.
-  -n  -N  ....  --line-numbers  --LINE-NUMBERS
-                  Don't use line numbers.
-  -o [_f_i_l_e]  .  --log-file=[_f_i_l_e]
-                  Copy to log file (standard input only).
-  -O [_f_i_l_e]  .  --LOG-FILE=[_f_i_l_e]
-                  Copy to log file (unconditionally overwrite).
-  -p [_p_a_t_t_e_r_n]  --pattern=[_p_a_t_t_e_r_n]
-                  Start at pattern (from command line).
-  -P [_p_r_o_m_p_t]   --prompt=[_p_r_o_m_p_t]
-                  Define new prompt.
-  -q  -Q  ....  --quiet  --QUIET  --silent --SILENT
-                  Quiet the terminal bell.
-  -r  -R  ....  --raw-control-chars  --RAW-CONTROL-CHARS
-                  Output "raw" control characters.
-  -s  ........  --squeeze-blank-lines
-                  Squeeze multiple blank lines.
-  -S  ........  --chop-long-lines
-                  Chop long lines.
-  -t [_t_a_g]  ..  --tag=[_t_a_g]
-                  Find a tag.
-  -T [_t_a_g_s_f_i_l_e] --tag-file=[_t_a_g_s_f_i_l_e]
-                  Use an alternate tags file.
-  -u  -U  ....  --underline-special  --UNDERLINE-SPECIAL
-                  Change handling of backspaces.
-  -V  ........  --version
-                  Display the version number of "less".
-  -w  ........  --hilite-unread
-                  Highlight first new line after forward-screen.
-  -W  ........  --HILITE-UNREAD
-                  Highlight first new line after any forward movement.
-  -x [_N[,...]]  --tabs=[_N[,...]]
-                  Set tab stops.
-  -X  ........  --no-init
-                  Don't use termcap init/deinit strings.
-                --no-keypad
-                  Don't use termcap keypad init/deinit strings.
-  -y [_N]  ....  --max-forw-scroll=[_N]
-                  Forward scroll limit.
-  -z [_N]  ....  --window=[_N]
-                  Set size of window.
-  -" [_c[_c]]  .  --quotes=[_c[_c]]
-                  Set shell quote characters.
-  -~  ........  --tilde
-                  Don't display tildes after end of file.
-  -# [_N]  ....  --shift=[_N]
-                  Horizontal scroll amount (0 = one half screen width)
-
- ---------------------------------------------------------------------------
-
-                          LLIINNEE EEDDIITTIINNGG
-
-        These keys can be used to edit text being entered 
-        on the "command line" at the bottom of the screen.
-
- RightArrow                       ESC-l     Move cursor right one character.
- LeftArrow                        ESC-h     Move cursor left one character.
- CNTL-RightArrow  ESC-RightArrow  ESC-w     Move cursor right one word.
- CNTL-LeftArrow   ESC-LeftArrow   ESC-b     Move cursor left one word.
- HOME                             ESC-0     Move cursor to start of line.
- END                              ESC-$     Move cursor to end of line.
- BACKSPACE                                  Delete char to left of cursor.
- DELETE                           ESC-x     Delete char under cursor.
- CNTL-BACKSPACE   ESC-BACKSPACE             Delete word to left of cursor.
- CNTL-DELETE      ESC-DELETE      ESC-X     Delete word under cursor.
- CNTL-U           ESC (MS-DOS only)         Delete entire line.
- UpArrow                          ESC-k     Retrieve previous command line.
- DownArrow                        ESC-j     Retrieve next command line.
- TAB                                        Complete filename & cycle.
- SHIFT-TAB                        ESC-TAB   Complete filename & reverse cycle.
- CNTL-L                                     Complete filename, list all.
-
-