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LESS(1)			    General Commands Manual		       LESS(1)

NAME
       less - opposite of more

SYNOPSIS
       less -?
       less --help
       less -V
       less --version
       less [-[+]aABcCdeEfFgGiIJKLmMnNqQrRsSuUVwWX~]
	    [-b	space] [-h lines] [-j line] [-k	keyfile]
	    [-{oO} logfile] [-p	pattern] [-P prompt] [-t tag]
	    [-T	tagsfile] [-x tab,...] [-y lines] [-[z]	lines]
	    [-#	shift] [+[+]cmd] [--] [filename]...
       (See  the  OPTIONS section for alternate	option syntax with long	option
       names.)

DESCRIPTION
       Less is a program similar to more(1), but which allows  backward	 move-
       ment in the file	as well	as forward movement.  Also, less does not have
       to read the entire input	file before  starting,	so  with  large	 input
       files  it  starts  up  faster  than text	editors	like vi(1).  Less uses
       termcap (or terminfo on some systems), so it can	run on	a  variety  of
       terminals.   There is even limited support for hardcopy terminals.  (On
       a hardcopy terminal, lines which	should be printed at the  top  of  the
       screen are prefixed with	a caret.)

       Commands	 are based on both more	and vi.	 Commands may be preceded by a
       decimal number, called N	in the descriptions below.  The	number is used
       by some commands, as indicated.

COMMANDS
       In  the following descriptions, ^X means	control-X.  ESC	stands for the
       ESCAPE key; for example ESC-v means the	two  character	sequence  "ES-
       CAPE", then "v".

       h or H Help:  display  a	 summary of these commands.  If	you forget all
	      the other	commands, remember this	one.

       SPACE or	^V or f	or ^F
	      Scroll forward N lines, default one window (see  option  -z  be-
	      low).  If	N is more than the screen size,	only the final screen-
	      ful is displayed.	 Warning: some systems use  ^V	as  a  special
	      literalization character.

       z      Like  SPACE,  but	 if  N is specified, it	becomes	the new	window
	      size.

       ESC-SPACE
	      Like SPACE, but scrolls a	full screenful,	 even  if  it  reaches
	      end-of-file in the process.

       ENTER or	RETURN or ^N or	e or ^E	or j or	^J
	      Scroll  forward N	lines, default 1.  The entire N	lines are dis-
	      played, even if N	is more	than the screen	size.

       d or ^D
	      Scroll forward N lines, default one half of the screen size.  If
	      N	 is specified, it becomes the new default for subsequent d and
	      u	commands.

       b or ^B or ESC-v
	      Scroll backward N	lines, default one window (see option  -z  be-
	      low).  If	N is more than the screen size,	only the final screen-
	      ful is displayed.

       w      Like ESC-v, but if N is specified, it  becomes  the  new	window
	      size.

       y or ^Y or ^P or	k or ^K
	      Scroll backward N	lines, default 1.  The entire N	lines are dis-
	      played, even if N	is more	than the screen	size.	Warning:  some
	      systems use ^Y as	a special job control character.

       u or ^U
	      Scroll  backward	N  lines, default one half of the screen size.
	      If N is specified, it becomes the	new default for	 subsequent  d
	      and u commands.

       J      Like j, but continues to scroll beyond the end of	the file.

       K or Y Like  k,	but  continues	to  scroll beyond the beginning	of the
	      file.

       ESC-) or	RIGHTARROW
	      Scroll horizontally right	N characters, default half the	screen
	      width  (see  the -# option).  If a number	N is specified,	it be-
	      comes the	default	for future RIGHTARROW and LEFTARROW  commands.
	      While  the  text	is  scrolled,  it acts as though the -S	option
	      (chop lines) were	in effect.

       ESC-( or	LEFTARROW
	      Scroll horizontally left N characters, default half  the	screen
	      width  (see  the -# option).  If a number	N is specified,	it be-
	      comes the	default	for future RIGHTARROW and LEFTARROW commands.

       ESC-} or	^RIGHTARROW
	      Scroll horizontally right	to show	the end	of  the	 longest  dis-
	      played line.

       ESC-{ or	^LEFTARROW
	      Scroll horizontally left back to the first column.

       r or ^R or ^L
	      Repaint the screen.

       R      Repaint  the  screen,  discarding	 any buffered input.  That is,
	      reload the current file.	Useful if the file is  changing	 while
	      it is being viewed.

       F      Scroll  forward, and keep	trying to read when the	end of file is
	      reached.	Normally this command would be used  when  already  at
	      the  end of the file.  It	is a way to monitor the	tail of	a file
	      which is growing while it	is being  viewed.   (The  behavior  is
	      similar  to  the	"tail  -f" command.)  To stop waiting for more
	      data, enter the interrupt	character (usually ^C).	 On some  sys-
	      tems you can also	use ^X.

       ESC-F  Like  F,	but  as	soon as	a line is found	which matches the last
	      search pattern, the terminal bell	is rung	and forward  scrolling
	      stops.

       g or < or ESC-<
	      Go to line N in the file,	default	1 (beginning of	file).	(Warn-
	      ing: this	may be slow if N is large.)

       G or > or ESC->
	      Go to line N in the file,	default	the end	of the	file.	(Warn-
	      ing:  this  may  be slow if N is large, or if N is not specified
	      and standard input, rather than a	file, is being read.)

       ESC-G  Same as G, except	if no number N is specified and	the  input  is
	      standard	input,	goes  to  the  last  line  which  is currently
	      buffered.

       p or % Go to a position N percent into the file.	 N should be between 0
	      and 100, and may contain a decimal point.

       P      Go to the	line containing	byte offset N in the file.

       {      If a left	curly bracket appears in the top line displayed	on the
	      screen, the { command  will  go  to  the	matching  right	 curly
	      bracket.	 The matching right curly bracket is positioned	on the
	      bottom line of the screen.  If there is more than	one left curly
	      bracket  on  the top line, a number N may	be used	to specify the
	      N-th bracket on the line.

       }      If a right curly bracket appears in the bottom line displayed on
	      the  screen,  the	 }  command will go to the matching left curly
	      bracket.	The matching left curly	bracket	is positioned  on  the
	      top  line	 of the	screen.	 If there is more than one right curly
	      bracket on the top line, a number	N may be used to  specify  the
	      N-th bracket on the line.

       (      Like {, but applies to parentheses rather	than curly brackets.

       )      Like }, but applies to parentheses rather	than curly brackets.

       [      Like  {, but applies to square brackets rather than curly	brack-
	      ets.

       ]      Like }, but applies to square brackets rather than curly	brack-
	      ets.

       ESC-^F Followed	by two characters, acts	like {,	but uses the two char-
	      acters as	open and close brackets, respectively.	 For  example,
	      "ESC  ^F < >" could be used to go	forward	to the > which matches
	      the < in the top displayed line.

       ESC-^B Followed by two characters, acts like }, but uses	the two	 char-
	      acters  as  open and close brackets, respectively.  For example,
	      "ESC ^B <	>" could be used to go backward	to the < which matches
	      the > in the bottom displayed line.

       m      Followed	by  any	lowercase or uppercase letter, marks the first
	      displayed	line with that letter.	If the status  column  is  en-
	      abled  via  the  -J  option,  the	status column shows the	marked
	      line.

       M      Acts like	m, except the last displayed  line  is	marked	rather
	      than the first displayed line.

       '      (Single  quote.)	Followed by any	lowercase or uppercase letter,
	      returns to the position which was	previously  marked  with  that
	      letter.	Followed by another single quote, returns to the posi-
	      tion at which the	last "large" movement  command	was  executed.
	      Followed	by a ^ or $, jumps to the beginning or end of the file
	      respectively.  Marks are preserved when a	new file is  examined,
	      so the ' command can be used to switch between input files.

       ^X^X   Same as single quote.

       ESC-m  Followed	by  any	lowercase or uppercase letter, clears the mark
	      identified by that letter.

       /pattern
	      Search forward in	the file for the N-th line containing the pat-
	      tern.  N defaults	to 1.  The pattern is a	regular	expression, as
	      recognized by the	regular	expression library  supplied  by  your
	      system.	The search starts at the first line displayed (but see
	      the -a and -j options, which change this).

	      Certain characters are special if	entered	at  the	 beginning  of
	      the  pattern;  they modify the type of search rather than	become
	      part of the pattern:

	      ^N or !
		     Search for	lines which do NOT match the pattern.

	      ^E or *
		     Search multiple files.  That is, if  the  search  reaches
		     the  END of the current file without finding a match, the
		     search continues in the next file	in  the	 command  line
		     list.

	      ^F or @
		     Begin  the	 search	at the first line of the FIRST file in
		     the command line list, regardless of  what	 is  currently
		     displayed	on  the	screen or the settings of the -a or -j
		     options.

	      ^K     Highlight any text	which matches the pattern on the  cur-
		     rent screen, but don't move to the	first match (KEEP cur-
		     rent position).

	      ^R     Don't interpret regular expression	 metacharacters;  that
		     is, do a simple textual comparison.

	      ^W     WRAP  around  the	current	 file.	That is, if the	search
		     reaches the end of	the current  file  without  finding  a
		     match,  the  search  continues from the first line	of the
		     current file up to	the line where it started.

       ?pattern
	      Search backward in the file for the  N-th	 line  containing  the
	      pattern.	 The search starts at the last line displayed (but see
	      the -a and -j options, which change this).

	      Certain characters are special as	in the / command:

	      ^N or !
		     Search for	lines which do NOT match the pattern.

	      ^E or *
		     Search multiple files.  That is, if  the  search  reaches
		     the  beginning  of	 the  current  file  without finding a
		     match, the	search continues in the	previous file  in  the
		     command line list.

	      ^F or @
		     Begin the search at the last line of the last file	in the
		     command line list,	regardless of what is  currently  dis-
		     played  on	the screen or the settings of the -a or	-j op-
		     tions.

	      ^K     As	in forward searches.

	      ^R     As	in forward searches.

	      ^W     WRAP around the current file.  That  is,  if  the	search
		     reaches the beginning of the current file without finding
		     a match, the search continues from	the last line  of  the
		     current file up to	the line where it started.

       ESC-/pattern
	      Same as "/*".

       ESC-?pattern
	      Same as "?*".

       n      Repeat  previous	search,	for N-th line containing the last pat-
	      tern.  If	the previous search was	modified by ^N,	the search  is
	      made  for	the N-th line NOT containing the pattern.  If the pre-
	      vious search was modified	by ^E, the  search  continues  in  the
	      next  (or	 previous)  file if not	satisfied in the current file.
	      If the previous search was modified by ^R, the  search  is  done
	      without  using  regular  expressions.  There is no effect	if the
	      previous search was modified by ^F or ^K.

       N      Repeat previous search, but in the reverse direction.

       ESC-n  Repeat previous search, but crossing file	boundaries.   The  ef-
	      fect is as if the	previous search	were modified by *.

       ESC-N  Repeat  previous search, but in the reverse direction and	cross-
	      ing file boundaries.

       ESC-u  Undo search highlighting.	  Turn	off  highlighting  of  strings
	      matching the current search pattern.  If highlighting is already
	      off because of a previous	ESC-u command, turn highlighting  back
	      on.   Any	 search	 command  will also turn highlighting back on.
	      (Highlighting can	also be	disabled by toggling the -G option; in
	      that case	search commands	do not turn highlighting back on.)

       ESC-U  Like  ESC-u  but	also  clears the saved search pattern.	If the
	      status column is enabled via the	-J  option,  this  clears  all
	      search matches marked in the status column.

       &pattern
	      Display  only  lines which match the pattern; lines which	do not
	      match the	pattern	are not	displayed.  If pattern	is  empty  (if
	      you  type	 &  immediately	 followed  by ENTER), any filtering is
	      turned off, and all lines	are displayed.	While filtering	is  in
	      effect,  an  ampersand  is  displayed  at	 the  beginning	of the
	      prompt, as a reminder that some lines in the file	may be hidden.
	      Multiple	&  commands  may  be entered, in which case only lines
	      which match all of the patterns will be displayed.

	      Certain characters are special as	in the / command:

	      ^N or !
		     Display only lines	which do NOT match the pattern.

	      ^R     Don't interpret regular expression	 metacharacters;  that
		     is, do a simple textual comparison.

       :e [filename]
	      Examine  a  new file.  If	the filename is	missing, the "current"
	      file (see	the :n and :p commands below) from the list  of	 files
	      in  the  command line is re-examined.  A percent sign (%)	in the
	      filename is replaced by the name of the current file.   A	 pound
	      sign  (#)	 is  replaced  by  the name of the previously examined
	      file.  However, two consecutive percent  signs  are  simply  re-
	      placed  with  a single percent sign.  This allows	you to enter a
	      filename that contains a percent sign in the  name.   Similarly,
	      two  consecutive	pound  signs  are replaced with	a single pound
	      sign.  The filename is inserted into the command	line  list  of
	      files  so	 that it can be	seen by	subsequent :n and :p commands.
	      If the filename consists of several files, they are all inserted
	      into  the	 list  of files	and the	first one is examined.	If the
	      filename contains	one or more spaces, the	entire filename	should
	      be enclosed in double quotes (also see the -" option).

       ^X^V or E
	      Same  as :e.  Warning: some systems use ^V as a special literal-
	      ization character.  On such systems, you may not be able to  use
	      ^V.

       :n     Examine  the next	file (from the list of files given in the com-
	      mand line).  If a	number N is specified, the N-th	next  file  is
	      examined.

       :p     Examine the previous file	in the command line list.  If a	number
	      N	is specified, the N-th previous	file is	examined.

       :x     Examine the first	file in	the command line list.	If a number  N
	      is specified, the	N-th file in the list is examined.

       :d     Remove the current file from the list of files.

       t      Go  to the next tag, if there were more than one matches for the
	      current tag.  See	the -t option for more details about tags.

       T      Go to the	previous tag, if there were more than one matches  for
	      the current tag.

       = or ^G or :f
	      Prints  some  information	about the file being viewed, including
	      its name and the line number and byte offset of the bottom  line
	      being  displayed.	 If possible, it also prints the length	of the
	      file, the	number of lines	in the file and	 the  percent  of  the
	      file above the last displayed line.

       -      Followed	by one of the command line option letters (see OPTIONS
	      below), this will	change the setting of that option and print  a
	      message  describing the new setting.  If a ^P (CONTROL-P)	is en-
	      tered immediately	after the dash,	the setting of the  option  is
	      changed  but  no message is printed.  If the option letter has a
	      numeric value (such as -b	or -h),	or a string value (such	as  -P
	      or  -t), a new value may be entered after	the option letter.  If
	      no new value is entered, a message describing the	 current  set-
	      ting is printed and nothing is changed.

       --     Like  the	 -  command, but takes a long option name (see OPTIONS
	      below) rather than a single option letter.  You must press ENTER
	      or  RETURN after typing the option name.	A ^P immediately after
	      the second dash suppresses printing of a message describing  the
	      new setting, as in the - command.

       -+     Followed by one of the command line option letters this will re-
	      set the option to	its default setting and	print  a  message  de-
	      scribing	the  new  setting.   (The  "-+X" command does the same
	      thing as "-+X" on	the command line.)  This  does	not  work  for
	      string-valued options.

       --+    Like  the	-+ command, but	takes a	long option name rather	than a
	      single option letter.

       -!     Followed by one of the command line option  letters,  this  will
	      reset  the  option  to the "opposite" of its default setting and
	      print a message describing the new setting.  This	does not  work
	      for numeric or string-valued options.

       --!    Like  the	-! command, but	takes a	long option name rather	than a
	      single option letter.

       _      (Underscore.)  Followed by one of	the command line  option  let-
	      ters,  this  will	print a	message	describing the current setting
	      of that option.  The setting of the option is not	changed.

       __     (Double underscore.)  Like the _ (underscore) command, but takes
	      a	long option name rather	than a single option letter.  You must
	      press ENTER or RETURN after typing the option name.

       +cmd   Causes the specified cmd to be executed each time	a new file  is
	      examined.	 For example, +G causes	less to	initially display each
	      file starting at the end rather than the beginning.

       V      Prints the version number	of less	being run.

       q or Q or :q or :Q or ZZ
	      Exits less.

       The following four commands may or may not be valid, depending on  your
       particular installation.

       v      Invokes  an  editor  to edit the current file being viewed.  The
	      editor is	taken from the environment variable VISUAL if defined,
	      or  EDITOR if VISUAL is not defined, or defaults to "vi" if nei-
	      ther VISUAL nor EDITOR is	defined.  See also the	discussion  of
	      LESSEDIT under the section on PROMPTS below.

       ! shell-command
	      Invokes  a shell to run the shell-command	given.	A percent sign
	      (%) in the command is replaced by	the name of the	current	 file.
	      A	pound sign (#) is replaced by the name of the previously exam-
	      ined file.  "!!" repeats the last	shell command.	 "!"  with  no
	      shell  command  simply  invokes  a  shell.  On Unix systems, the
	      shell is taken from the environment variable SHELL, or  defaults
	      to  "sh".	  On  MS-DOS and OS/2 systems, the shell is the	normal
	      command processor.

       | <m> shell-command
	      <m> represents any mark letter.  Pipes a section	of  the	 input
	      file  to the given shell command.	 The section of	the file to be
	      piped is between the position marked by the letter and the  cur-
	      rent  screen.  The entire	current	screen is included, regardless
	      of whether the marked position is	before or  after  the  current
	      screen.	<m> may	also be	^ or $ to indicate beginning or	end of
	      file respectively.  If <m> is . or newline, the  current	screen
	      is piped.

       s filename
	      Save  the	 input	to  a file.  This only works if	the input is a
	      pipe, not	an ordinary file.

OPTIONS
       Command line options are	described below.  Most options may be  changed
       while less is running, via the "-" command.

       Most  options  may be given in one of two forms:	either a dash followed
       by a single letter, or two dashes followed by a long  option  name.   A
       long  option name may be	abbreviated as long as the abbreviation	is un-
       ambiguous.  For example,	--quit-at-eof may be abbreviated  --quit,  but
       not --qui, since	both --quit-at-eof and --quiet begin with --qui.  Some
       long option names are in	uppercase, such	as --QUIT-AT-EOF, as  distinct
       from  --quit-at-eof.  Such option names need only have their first let-
       ter capitalized;	the remainder of the name may be in either case.   For
       example,	--Quit-at-eof is equivalent to --QUIT-AT-EOF.

       Options are also	taken from the environment variable "LESS".  For exam-
       ple, to avoid typing "less -options ..."	each time less is invoked, you
       might tell csh:

       setenv LESS "-options"

       or if you use sh:

       LESS="-options";	export LESS

       On  MS-DOS,  you	don't need the quotes, but you should replace any per-
       cent signs in the options string	by double percent signs.

       The environment variable	is parsed before the command line, so  command
       line  options override the LESS environment variable.  If an option ap-
       pears in	the LESS variable, it can be reset to its default value	on the
       command line by beginning the command line option with "-+".

       Some  options  like -k or -D require a string to	follow the option let-
       ter.  The string	for that option	is considered to  end  when  a	dollar
       sign  ($)  is found.  For example, you can set two -D options on	MS-DOS
       like this:

       LESS="Dn9.1$Ds4.1"

       If the --use-backslash option appears earlier in	the  options,  then  a
       dollar  sign or backslash may be	included literally in an option	string
       by preceding it with a backslash.  If the --use-backslash option	is not
       in  effect, then	backslashes are	not treated specially, and there is no
       way to include a	dollar sign in the option string.

       -? or --help
	      This option displays a summary of	the commands accepted by  less
	      (the  same  as the h command).  (Depending on how	your shell in-
	      terprets the question mark, it may be  necessary	to  quote  the
	      question mark, thus: "-\?".)

       -a or --search-skip-screen
	      By  default,  forward searches start at the top of the displayed
	      screen and backwards searches start at the bottom	 of  the  dis-
	      played  screen (except for repeated searches invoked by the n or
	      N	commands, which	start after or before the  "target"  line  re-
	      spectively;  see	the -j option for more about the target	line).
	      The -a option causes forward searches to instead	start  at  the
	      bottom  of  the screen and backward searches to start at the top
	      of the screen, thus skipping all lines displayed on the screen.

       -A or --SEARCH-SKIP-SCREEN
	      Causes all forward searches (not just non-repeated searches)  to
	      start  just  after the target line, and all backward searches to
	      start just before	the target line.  Thus,	forward	searches  will
	      skip part	of the displayed screen	(from the first	line up	to and
	      including	the target line).  Similarly backwards	searches  will
	      skip the displayed screen	from the last line up to and including
	      the target line.	This was the default behavior in less versions
	      prior to 441.

       -bn or --buffers=n
	      Specifies	 the  amount  of  buffer  space	less will use for each
	      file, in units of	kilobytes (1024	bytes).	 By default  64	KB  of
	      buffer  space  is	used for each file (unless the file is a pipe;
	      see the -B option).  The -b  option  specifies  instead  that  n
	      kilobytes	of buffer space	should be used for each	file.  If n is
	      -1, buffer space is unlimited; that is, the entire file  can  be
	      read into	memory.

       -B or --auto-buffers
	      By default, when data is read from a pipe, buffers are allocated
	      automatically as needed.	If a large amount of data is read from
	      the  pipe,  this	can cause a large amount of memory to be allo-
	      cated.  The -B option disables this automatic allocation of buf-
	      fers for pipes, so that only 64 KB (or the amount	of space spec-
	      ified by the -b option) is used for the pipe.  Warning:  use  of
	      -B can result in erroneous display, since	only the most recently
	      viewed part of the piped data is kept  in	 memory;  any  earlier
	      data is lost.

       -c or --clear-screen
	      Causes  full  screen  repaints  to  be painted from the top line
	      down.  By	default, full screen repaints are  done	 by  scrolling
	      from the bottom of the screen.

       -C or --CLEAR-SCREEN
	      Same as -c, for compatibility with older versions	of less.

       -d or --dumb
	      The -d option suppresses the error message normally displayed if
	      the terminal is dumb; that is, lacks some	important  capability,
	      such as the ability to clear the screen or scroll	backward.  The
	      -d option	does not otherwise change the behavior of  less	 on  a
	      dumb terminal.

       -Dxcolor	or --color=xcolor
	      Changes  the  color of different parts of	the displayed text.  x
	      is a single character which selects the type of text whose color
	      is being set:

	      B	     Binary characters.

	      C	     Control characters.

	      E	     Errors and	informational messages.

	      M	     Mark letters in the status	column.

	      N	     Line numbers enabled via the -N option.

	      P	     Prompts.

	      R	     The rscroll character.

	      S	     Search results.

	      W	     The highlight enabled via the -w option.

	      d	     Bold text.

	      k	     Blinking text.

	      s	     Standout text.

	      u	     Underlined	text.

	      The  uppercase letters can be used only when the --use-color op-
	      tion is enabled.	When text color	is specified by	both an	upper-
	      case  letter  and	a lowercase letter, the	uppercase letter takes
	      precedence.  For example,	error messages are normally  displayed
	      as standout text.	 So if both "s"	and "E"	are given a color, the
	      "E" color	applies	to error messages, and the "s"	color  applies
	      to  other	 standout text.	 The "d" and "u" letters refer to bold
	      and underline text formed	by overstriking	with  backspaces  (see
	      the -u option), not to text using	ANSI escape sequences with the
	      -R option.

	      A	lowercase letter may be	followed by a +	to indicate that  both
	      the  normal format change	and the	specified color	should both be
	      used.  For example, -Dug displays	underlined text	as green with-
	      out  underlining;	 the green color has replaced the usual	under-
	      line formatting.	But -Du+g displays  underlined	text  as  both
	      green and	in underlined format.

	      color is either a	4-bit color string or an 8-bit color string:

	      A	 4-bit	color string is	zero, one or two characters, where the
	      first character specifies	the foreground color  and  the	second
	      specifies	the background color as	follows:

	      b	     Blue

	      c	     Cyan

	      g	     Green

	      k	     Black

	      m	     Magenta

	      r	     Red

	      w	     White

	      y	     Yellow

	      The  corresponding upper-case letter denotes a brighter shade of
	      the color.  For example, -DNGk displays line numbers  as	bright
	      green  text on a black background, and -DEbR displays error mes-
	      sages as blue text on a bright red background.  If either	 char-
	      acter  is	a "-" or is omitted, the corresponding color is	set to
	      that of normal text.

	      An 8-bit color string is one or two decimal  integers  separated
	      by a dot,	where the first	integer	specifies the foreground color
	      and the second specifies the background color.  Each integer  is
	      a	 value	between	0 and 255 inclusive which selects a "CSI 38;5"
	      color value (see
	      https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_parameters)
	      If either	integer	is a "-" or is omitted,	the corresponding col-
	      or is set	to that	of normal text.	 On MS-DOS versions  of	 less,
	      8-bit color is not supported; instead, decimal values are	inter-
	      preted as	4-bit CHAR_INFO.Attributes values (see
	      https://docs.microsoft.com/en-us/windows/console/char-info-str).

       -e or --quit-at-eof
	      Causes less to automatically exit	the  second  time  it  reaches
	      end-of-file.   By	 default, the only way to exit less is via the
	      "q" command.

       -E or --QUIT-AT-EOF
	      Causes less to automatically exit	the first time it reaches end-
	      of-file.

       -f or --force
	      Forces non-regular files to be opened.  (A non-regular file is a
	      directory	or a device special file.)  Also suppresses the	 warn-
	      ing message when a binary	file is	opened.	 By default, less will
	      refuse to	open non-regular files.	 Note that some	operating sys-
	      tems will	not allow directories to be read, even if -f is	set.

       -F or --quit-if-one-screen
	      Causes less to automatically exit	if the entire file can be dis-
	      played on	the first screen.

       -g or --hilite-search
	      Normally,	less will highlight ALL	strings	which match  the  last
	      search  command.	 The  -g option	changes	this behavior to high-
	      light only the particular	string which was  found	 by  the  last
	      search command.  This can	cause less to run somewhat faster than
	      the default.

       -G or --HILITE-SEARCH
	      The -G option suppresses all highlighting	of  strings  found  by
	      search commands.

       -hn or --max-back-scroll=n
	      Specifies	 a  maximum number of lines to scroll backward.	 If it
	      is necessary to scroll backward more than	n lines, the screen is
	      repainted	in a forward direction instead.	 (If the terminal does
	      not have the ability to scroll backward, -h0 is implied.)

       -i or --ignore-case
	      Causes searches to ignore	case; that is, uppercase and lowercase
	      are  considered identical.  This option is ignored if any	upper-
	      case letters appear in the search	pattern; in other words, if  a
	      pattern  contains	 uppercase  letters, then that search does not
	      ignore case.

       -I or --IGNORE-CASE
	      Like -i, but searches ignore case	even if	the  pattern  contains
	      uppercase	letters.

       -jn or --jump-target=n
	      Specifies	 a line	on the screen where the	"target" line is to be
	      positioned.  The target line is the line specified by  any  com-
	      mand  to	search for a pattern, jump to a	line number, jump to a
	      file percentage or jump to a tag.	 The screen line may be	speci-
	      fied  by	a number: the top line on the screen is	1, the next is
	      2, and so	on.  The number	may be negative	to specify a line rel-
	      ative to the bottom of the screen: the bottom line on the	screen
	      is -1, the second	to the bottom is -2, and so on.	  Alternately,
	      the  screen line may be specified	as a fraction of the height of
	      the screen, starting with	a decimal point: .5 is in  the	middle
	      of  the screen, .3 is three tenths down from the first line, and
	      so on.  If the line is specified as a fraction, the actual  line
	      number  is  recalculated	if  the	terminal window	is resized, so
	      that the target line remains at the specified  fraction  of  the
	      screen  height.	If any form of the -j option is	used, repeated
	      forward searches (invoked	with "n" or "N") begin at the line im-
	      mediately	 after the target line,	and repeated backward searches
	      begin at the target line,	unless changed by -a or	-A.  For exam-
	      ple, if "-j4" is used, the target	line is	the fourth line	on the
	      screen, so forward searches begin	 at  the  fifth	 line  on  the
	      screen.	However	nonrepeated searches (invoked with "/" or "?")
	      always begin at the start	or end of the current  screen  respec-
	      tively.

       -J or --status-column
	      Displays	a  status  column at the left edge of the screen.  The
	      status column shows the lines that matched the  current  search,
	      and any lines that are marked (via the m or M command).

       -kfilename or --lesskey-file=filename
	      Causes less to open and interpret	the named file as a lesskey(1)
	      binary file.  Multiple -k	options	 may  be  specified.   If  the
	      LESSKEY  or  LESSKEY_SYSTEM environment variable is set, or if a
	      lesskey file is found in a standard place	(see KEY BINDINGS), it
	      is also used as a	lesskey	file.

       --lesskey-src=filename
	      Causes less to open and interpret	the named file as a lesskey(1)
	      source file.  If the LESSKEYIN or	 LESSKEYIN_SYSTEM  environment
	      variable is set, or if a lesskey source file is found in a stan-
	      dard place (see KEY BINDINGS), it	is  also  used	as  a  lesskey
	      source  file.   Prior to version 582, the	lesskey	program	needed
	      to be run	to convert a lesskey source file to a  lesskey	binary
	      file  for	 less to use.  Newer versions of less read the lesskey
	      source file directly and ignore the binary file  if  the	source
	      file exists.

       -K or --quit-on-intr
	      Causes  less  to exit immediately	(with status 2)	when an	inter-
	      rupt character (usually ^C) is typed.   Normally,	 an  interrupt
	      character	causes less to stop whatever it	is doing and return to
	      its command prompt.  Note	that use of this option	makes  it  im-
	      possible to return to the	command	prompt from the	"F" command.

       -L or --no-lessopen
	      Ignore  the  LESSOPEN  environment  variable (see	the INPUT PRE-
	      PROCESSOR	section	below).	 This option can be  set  from	within
	      less,  but  it will apply	only to	files opened subsequently, not
	      to the file which	is currently open.

       -m or --long-prompt
	      Causes less to prompt verbosely (like more),  with  the  percent
	      into the file.  By default, less prompts with a colon.

       -M or --LONG-PROMPT
	      Causes less to prompt even more verbosely	than more.

       -n or --line-numbers
	      Suppresses  line numbers.	 The default (to use line numbers) may
	      cause less to run	more slowly in some cases, especially  with  a
	      very large input file.  Suppressing line numbers with the	-n op-
	      tion will	avoid this problem.  Using  line  numbers  means:  the
	      line number will be displayed in the verbose prompt and in the =
	      command, and the v command will pass the current line number  to
	      the  editor  (see	also the discussion of LESSEDIT	in PROMPTS be-
	      low).

       -N or --LINE-NUMBERS
	      Causes a line number to be displayed at the  beginning  of  each
	      line in the display.

       -ofilename or --log-file=filename
	      Causes  less  to copy its	input to the named file	as it is being
	      viewed.  This applies only when the input	file is	a pipe,	not an
	      ordinary	file.	If  the	file already exists, less will ask for
	      confirmation before overwriting it.

       -Ofilename or --LOG-FILE=filename
	      The -O option is like -o,	but it will overwrite an existing file
	      without asking for confirmation.

	      If  no log file has been specified, the -o and -O	options	can be
	      used from	within less to specify a log  file.   Without  a  file
	      name, they will simply report the	name of	the log	file.  The "s"
	      command is equivalent to specifying -o from within less.

       -ppattern or --pattern=pattern
	      The -p option on the command line	is  equivalent	to  specifying
	      +/pattern;  that	is, it tells less to start at the first	occur-
	      rence of pattern in the file.

       -Pprompt	or --prompt=prompt
	      Provides a way to	tailor the three prompt	 styles	 to  your  own
	      preference.  This	option would normally be put in	the LESS envi-
	      ronment variable,	rather than being typed	in with	each less com-
	      mand.  Such an option must either	be the last option in the LESS
	      variable,	or be terminated by a dollar sign.
	       -Ps followed by a string	changes	the default (short) prompt  to
	      that string.
	       -Pm changes the medium (-m) prompt.
	       -PM changes the long (-M) prompt.
	       -Ph changes the prompt for the help screen.
	       -P= changes the message printed by the =	command.
	       -Pw  changes the	message	printed	while waiting for data (in the
	      F	command).

	      All prompt strings consist of a sequence of letters and  special
	      escape sequences.	 See the section on PROMPTS for	more details.

       -q or --quiet or	--silent
	      Causes  moderately  "quiet"  operation: the terminal bell	is not
	      rung if an attempt is made to scroll past	the end	of the file or
	      before the beginning of the file.	 If the	terminal has a "visual
	      bell", it	is used	instead.  The bell will	 be  rung  on  certain
	      other  errors, such as typing an invalid character.  The default
	      is to ring the terminal bell in all such cases.

       -Q or --QUIET or	--SILENT
	      Causes totally "quiet" operation:	the  terminal  bell  is	 never
	      rung.   If  the  terminal	has a "visual bell", it	is used	in all
	      cases where the terminal bell would have been rung.

       -r or --raw-control-chars
	      Causes "raw" control characters to be displayed.	The default is
	      to  display control characters using the caret notation; for ex-
	      ample, a control-A (octal	001) is	displayed as  "^A".   Warning:
	      when the -r option is used, less cannot keep track of the	actual
	      appearance of the	screen (since this depends on how  the	screen
	      responds to each type of control character).  Thus, various dis-
	      play problems may	result,	such as	long lines being split in  the
	      wrong place.

	      USE OF THE -r OPTION IS NOT RECOMMENDED.

       -R or --RAW-CONTROL-CHARS
	      Like -r, but only	ANSI "color" escape sequences and OSC 8	hyper-
	      link sequences are output	in "raw" form.	Unlike -r, the	screen
	      appearance  is  maintained correctly, provided that there	are no
	      escape sequences in the file other than these  types  of	escape
	      sequences.   Color  escape sequences are only supported when the
	      color is changed within one line,	not across  lines.   In	 other
	      words,  the beginning of each line is assumed to be normal (non-
	      colored),	regardless of any escape sequences in previous	lines.
	      For the purpose of keeping track of screen appearance, these es-
	      cape sequences are assumed to not	move the cursor.

	      OSC 8 hyperlinks are sequences of	the form:

		   ESC ] 8 ; ... \7

	      The terminating sequence may be either a BEL character  (\7)  or
	      the two-character	sequence "ESC \".

	      ANSI color escape	sequences are sequences	of the form:

		   ESC [ ... m

	      where  the "..." is zero or more color specification characters.
	      You can make less	think that characters other than "m"  can  end
	      ANSI  color escape sequences by setting the environment variable
	      LESSANSIENDCHARS to the list of characters which can end a color
	      escape  sequence.	  And  you can make less think that characters
	      other than the standard ones may appear between the ESC and  the
	      m	 by  setting  the environment variable LESSANSIMIDCHARS	to the
	      list of characters which can appear.

       -s or --squeeze-blank-lines
	      Causes consecutive blank lines to	 be  squeezed  into  a	single
	      blank line.  This	is useful when viewing nroff output.

       -S or --chop-long-lines
	      Causes  lines  longer than the screen width to be	chopped	(trun-
	      cated) rather than wrapped.  That	is, the	portion	of a long line
	      that does	not fit	in the screen width is not displayed until you
	      press RIGHT-ARROW.  The default is to wrap long lines; that  is,
	      display the remainder on the next	line.

       -ttag or	--tag=tag
	      The -t option, followed immediately by a TAG, will edit the file
	      containing that tag.  For	this to	work, tag information must  be
	      available;  for  example,	there may be a file in the current di-
	      rectory called "tags", which was previously built	by ctags(1) or
	      an equivalent command.  If the environment variable LESSGLOBALT-
	      AGS is set, it is	taken to be the	name of	a  command  compatible
	      with  global(1),	and  that command is executed to find the tag.
	      (See  http://www.gnu.org/software/global/global.html).   The  -t
	      option  may also be specified from within	less (using the	- com-
	      mand) as a way of	examining a new	file.	The  command  ":t"  is
	      equivalent to specifying -t from within less.

       -Ttagsfile or --tag-file=tagsfile
	      Specifies	a tags file to be used instead of "tags".

       -u or --underline-special
	      Causes  backspaces  and carriage returns to be treated as	print-
	      able characters; that is,	they are sent  to  the	terminal  when
	      they appear in the input.

       -U or --UNDERLINE-SPECIAL
	      Causes  backspaces, tabs,	carriage returns and "formatting char-
	      acters" (as defined by Unicode) to be treated as control charac-
	      ters; that is, they are handled as specified by the -r option.

	      By  default, if neither -u nor -U	is given, backspaces which ap-
	      pear adjacent to an underscore character are treated  specially:
	      the  underlined  text is displayed using the terminal's hardware
	      underlining capability.  Also, backspaces	which  appear  between
	      two  identical  characters are treated specially:	the overstruck
	      text is printed using the	terminal's hardware boldface capabili-
	      ty.   Other  backspaces  are  deleted,  along with the preceding
	      character.  Carriage returns immediately followed	by  a  newline
	      are deleted.  Other carriage returns are handled as specified by
	      the -r option.  Unicode formatting characters, such as the  Byte
	      Order  Mark, are sent to the terminal.  Text which is overstruck
	      or underlined can	be searched for	if neither -u nor -U is	in ef-
	      fect.

       -V or --version
	      Displays the version number of less.

       -w or --hilite-unread
	      Temporarily  highlights  the  first  "new"  line after a forward
	      movement of a full page.	The first "new"	line is	the line imme-
	      diately  following  the  line  previously	 at  the bottom	of the
	      screen.  Also highlights the target line after a g or p command.
	      The  highlight is	removed	at the next command which causes move-
	      ment.  The entire	line is	highlighted, unless the	-J  option  is
	      in effect, in which case only the	status column is highlighted.

       -W or --HILITE-UNREAD
	      Like -w, but temporarily highlights the first new	line after any
	      forward movement command larger than one line.

       -xn,... or --tabs=n,...
	      Sets tab stops.  If only one n is	specified, tab stops  are  set
	      at  multiples  of	n.  If multiple	values separated by commas are
	      specified, tab stops are set at those positions, and  then  con-
	      tinue  with  the	same  spacing  as  the last two.  For example,
	      -x9,17 will set tabs at positions	9, 17, 25, 33, etc.   The  de-
	      fault for	n is 8.

       -X or --no-init
	      Disables sending the termcap initialization and deinitialization
	      strings to the terminal.	This is	 sometimes  desirable  if  the
	      deinitialization	string does something unnecessary, like	clear-
	      ing the screen.

       -yn or --max-forw-scroll=n
	      Specifies	a maximum number of lines to scroll forward.  If it is
	      necessary	to scroll forward more than n lines, the screen	is re-
	      painted instead.	The -c or -C option may	 be  used  to  repaint
	      from  the	top of the screen if desired.  By default, any forward
	      movement causes scrolling.

       -zn or --window=n or -n
	      Changes the default scrolling window size	to n lines.   The  de-
	      fault  is	 one screenful.	 The z and w commands can also be used
	      to change	the window size.  The "z" may be omitted for  compati-
	      bility with some versions	of more.  If the number	n is negative,
	      it indicates n lines less	than the current screen	size.  For ex-
	      ample, if	the screen is 24 lines,	-z-4 sets the scrolling	window
	      to 20 lines.   If	 the  screen  is  resized  to  40  lines,  the
	      scrolling	window automatically changes to	36 lines.

       -"cc or --quotes=cc
	      Changes  the  filename quoting character.	 This may be necessary
	      if you are trying	to name	a file which contains both spaces  and
	      quote  characters.  Followed by a	single character, this changes
	      the quote	character to that character.  Filenames	 containing  a
	      space should then	be surrounded by that character	rather than by
	      double quotes.  Followed by two  characters,  changes  the  open
	      quote  to	the first character, and the close quote to the	second
	      character.  Filenames containing a space should then be preceded
	      by  the  open  quote  character  and followed by the close quote
	      character.  Note	that  even  after  the	quote  characters  are
	      changed,	this  option  remains  -" (a dash followed by a	double
	      quote).

       -~ or --tilde
	      Normally lines after end of file are displayed as	a single tilde
	      (~).  This option	causes lines after end of file to be displayed
	      as blank lines.

       -# or --shift
	      Specifies	the default number of positions	to scroll horizontally
	      in  the RIGHTARROW and LEFTARROW commands.  If the number	speci-
	      fied is zero, it sets the	default	number	of  positions  to  one
	      half of the screen width.	 Alternately, the number may be	speci-
	      fied as a	fraction of the	width of the screen, starting  with  a
	      decimal  point:  .5  is  half  of	 the screen width, .3 is three
	      tenths of	the screen width, and so on.  If the number is	speci-
	      fied as a	fraction, the actual number of scroll positions	is re-
	      calculated if the	terminal window	is resized, so that the	actual
	      scroll remains at	the specified fraction of the screen width.

       --file-size
	      If --file-size is	specified, less	will determine the size	of the
	      file immediately after opening the file.	Normally this  is  not
	      done, because it can be slow if the input	file is	large.

       --follow-name
	      Normally,	if the input file is renamed while an F	command	is ex-
	      ecuting, less will continue to display the contents of the orig-
	      inal  file  despite its name change.  If --follow-name is	speci-
	      fied, during an F	command	less will periodically attempt to  re-
	      open the file by name.  If the reopen succeeds and the file is a
	      different	file from the original (which means that  a  new  file
	      has  been	 created  with	the same name as the original (now re-
	      named) file), less will display the contents of that new file.

       --incsearch
	      Subsequent search	commands will be "incremental";	that is,  less
	      will  advance  to	the next line containing the search pattern as
	      each character of	the pattern is typed in.

       --line-num-width
	      Sets the minimum width of	the line number	field when the -N  op-
	      tion is in effect.  The default is 7 characters.

       --mouse
	      Enables  mouse  input: scrolling the mouse wheel down moves for-
	      ward in the file,	scrolling the mouse wheel up  moves  backwards
	      in  the  file,  and  clicking the	mouse sets the "#" mark	to the
	      line where the mouse is clicked.	The number of lines to	scroll
	      when  the	wheel is moved can be set by the --wheel-lines option.
	      Mouse input works	only on	terminals which	support	X11 mouse  re-
	      porting, and on the Windows version of less.

       --MOUSE
	      Like --mouse, except the direction scrolled on mouse wheel move-
	      ment is reversed.

       --no-keypad
	      Disables sending the keypad initialization and  deinitialization
	      strings to the terminal.	This is	sometimes useful if the	keypad
	      strings make the numeric keypad behave in	an undesirable manner.

       --no-histdups
	      This option changes the behavior so that if a search  string  or
	      file  name  is  typed  in, and the same string is	already	in the
	      history list, the	existing copy is removed from the history list
	      before  the  new one is added.  Thus, a given string will	appear
	      only once	in the history list.  Normally,	a  string  may	appear
	      multiple times.

       --rscroll
	      This  option changes the character used to mark truncated	lines.
	      It may begin with	a two-character	attribute indicator like LESS-
	      BINFMT  does.   If  there	is no attribute	indicator, standout is
	      used.  If	set to "-", truncated lines are	not marked.

       --save-marks
	      Save marks in the	history	file, so  marks	 are  retained	across
	      different	invocations of less.

       --status-col-width
	      Sets the width of	the status column when the -J option is	in ef-
	      fect.  The default is 2 characters.

       --use-backslash
	      This option changes the interpretations of options which	follow
	      this one.	 After the --use-backslash option, any backslash in an
	      option string is removed and the following  character  is	 taken
	      literally.   This	 allows	a dollar sign to be included in	option
	      strings.

       --use-color
	      Enables the colored text in various places.  The -D  option  can
	      be  used	to  change the colors.	Colored	text works only	if the
	      terminal supports	ANSI color escape sequences (as	defined	in EC-
	      MA-48 SGR; see
	      https://www.ecma-international.org/publications-and-
	      standards/standards/ecma-48).

       --wheel-lines=n
	      Set the number of	lines  to  scroll  when	 the  mouse  wheel  is
	      scrolled	and  the  --mouse or --MOUSE option is in effect.  The
	      default is 1 line.

       --     A	command	line argument of "--" marks the	end  of	 option	 argu-
	      ments.   Any  arguments  following this are interpreted as file-
	      names.  This can be useful when viewing a	file whose name	begins
	      with a "-" or "+".

       +      If  a  command  line option begins with +, the remainder of that
	      option is	taken to be an initial command to less.	 For  example,
	      +G  tells	 less  to start	at the end of the file rather than the
	      beginning, and +/xyz tells it to start at	the  first  occurrence
	      of  "xyz"	 in  the file.	As a special case, +<number> acts like
	      +<number>g; that is, it starts the display at the	specified line
	      number  (however,	 see  the caveat under the "g" command above).
	      If the option starts with	++, the	initial	command	applies	to ev-
	      ery  file	 being	viewed,	not just the first one.	 The + command
	      described	previously may also be used to set (or change) an ini-
	      tial command for every file.

LINE EDITING
       When  entering a	command	line at	the bottom of the screen (for example,
       a filename for the :e command, or the pattern for  a  search  command),
       certain keys can	be used	to manipulate the command line.	 Most commands
       have an alternate form in [ brackets ] which can	be used	if a key  does
       not  exist  on  a  particular keyboard.	(Note that the forms beginning
       with ESC	do not work in some MS-DOS and Windows systems because ESC  is
       the  line  erase	 character.)  Any of these special keys	may be entered
       literally by preceding it with the "literal" character,	either	^V  or
       ^A.   A	backslash itself may also be entered literally by entering two
       backslashes.

       LEFTARROW [ ESC-h ]
	      Move the cursor one space	to the left.

       RIGHTARROW [ ESC-l ]
	      Move the cursor one space	to the right.

       ^LEFTARROW [ ESC-b or ESC-LEFTARROW ]
	      (That is,	CONTROL	and LEFTARROW simultaneously.)	Move the  cur-
	      sor one word to the left.

       ^RIGHTARROW [ ESC-w or ESC-RIGHTARROW ]
	      (That is,	CONTROL	and RIGHTARROW simultaneously.)	 Move the cur-
	      sor one word to the right.

       HOME [ ESC-0 ]
	      Move the cursor to the beginning of the line.

       END [ ESC-$ ]
	      Move the cursor to the end of the	line.

       BACKSPACE
	      Delete the character to the left of the cursor,  or  cancel  the
	      command if the command line is empty.

       DELETE or [ ESC-x ]
	      Delete the character under the cursor.

       ^BACKSPACE [ ESC-BACKSPACE ]
	      (That  is,  CONTROL  and	BACKSPACE simultaneously.)  Delete the
	      word to the left of the cursor.

       ^DELETE [ ESC-X or ESC-DELETE ]
	      (That is,	CONTROL	and DELETE simultaneously.)  Delete  the  word
	      under the	cursor.

       UPARROW [ ESC-k ]
	      Retrieve	the  previous  command	line.  If you first enter some
	      text and then press UPARROW, it will retrieve the	previous  com-
	      mand which begins	with that text.

       DOWNARROW [ ESC-j ]
	      Retrieve	the  next  command line.  If you first enter some text
	      and then press DOWNARROW,	it  will  retrieve  the	 next  command
	      which begins with	that text.

       TAB    Complete	the partial filename to	the left of the	cursor.	 If it
	      matches more than	one filename, the first	match is entered  into
	      the  command  line.   Repeated  TABs  will  cycle	thru the other
	      matching filenames.  If the completed filename is	a directory, a
	      "/"  is  appended	to the filename.  (On MS-DOS systems, a	"\" is
	      appended.)  The environment variable LESSSEPARATOR can  be  used
	      to specify a different character to append to a directory	name.

       BACKTAB [ ESC-TAB ]
	      Like, TAB, but cycles in the reverse direction thru the matching
	      filenames.

       ^L     Complete the partial filename to the left	of the cursor.	If  it
	      matches more than	one filename, all matches are entered into the
	      command line (if they fit).

       ^U (Unix	and OS/2) or ESC (MS-DOS)
	      Delete the entire	command	line, or cancel	 the  command  if  the
	      command line is empty.  If you have changed your line-kill char-
	      acter in Unix to something other than ^U,	that character is used
	      instead of ^U.

       ^G     Delete the entire	command	line and return	to the main prompt.

KEY BINDINGS
       You  may	 define	 your  own  less commands by creating a	lesskey	source
       file.  This file	specifies a set	of command keys	and an action  associ-
       ated  with  each	 key.	You may	also change the	line-editing keys (see
       LINE EDITING), and to set environment variables.	  If  the  environment
       variable	 LESSKEYIN  is	set, less uses that as the name	of the lesskey
       source file.  Otherwise,	less looks in a	standard place for the lesskey
       source  file:  On  Unix	systems,  less looks for a lesskey file	called
       "$XDG_CONFIG_HOME/lesskey" or "$HOME/.lesskey".	On MS-DOS and  Windows
       systems,	 less looks for	a lesskey file called "$HOME/_lesskey",	and if
       it is not found there, then looks for a lesskey file called  "_lesskey"
       in  any	directory specified in the PATH	environment variable.  On OS/2
       systems,	less looks for a lesskey file called "$HOME/lesskey.ini",  and
       if  it is not found, then looks for a lesskey file called "lesskey.ini"
       in any directory	specified in the INIT environment variable, and	if  it
       not  found there, then looks for	a lesskey file called "lesskey.ini" in
       any directory specified in the  PATH  environment  variable.   See  the
       lesskey manual page for more details.

       A  system-wide  lesskey	source	file may also be set up	to provide key
       bindings.  If a key is defined in both a	local lesskey file and in  the
       system-wide  file,  key bindings	in the local file take precedence over
       those  in  the  system-wide  file.    If	  the	environment   variable
       LESSKEYIN_SYSTEM	 is set, less uses that	as the name of the system-wide
       lesskey file.  Otherwise, less looks in a standard place	for  the  sys-
       tem-wide	lesskey	file: On Unix systems, the system-wide lesskey file is
       /usr/local/etc/syslesskey.  (However, if	less was built with a  differ-
       ent  sysconf directory than /usr/local/etc, that	directory is where the
       sysless file is found.)	On MS-DOS and Windows systems, the system-wide
       lesskey	file  is  c:\_syslesskey.   On	OS/2  systems, the system-wide
       lesskey file is c:\syslesskey.ini.

       Previous	versions of less (before v582) used lesskey files with a bina-
       ry  format,  produced by	the lesskey program. It	is no longer necessary
       to use the lesskey program.

INPUT PREPROCESSOR
       You may define an "input	preprocessor" for less.	 Before	less  opens  a
       file, it	first gives your input preprocessor a chance to	modify the way
       the contents of the file	are displayed.	An input preprocessor is  sim-
       ply  an executable program (or shell script), which writes the contents
       of the file to a	different file,	called the replacement file.  The con-
       tents  of  the replacement file are then	displayed in place of the con-
       tents of	the original file.  However, it	will appear to the user	as  if
       the  original  file  is opened; that is,	less will display the original
       filename	as the name of the current file.

       An input	preprocessor receives one command line argument, the  original
       filename,  as  entered  by  the user.  It should	create the replacement
       file, and when finished,	print the name of the replacement file to  its
       standard	 output.  If the input preprocessor does not output a replace-
       ment filename, less uses	the original file, as normal.  The input  pre-
       processor  is not called	when viewing standard input.  To set up	an in-
       put preprocessor, set the LESSOPEN environment variable	to  a  command
       line  which  will  invoke  your	input preprocessor.  This command line
       should include one occurrence of	the string "%s",  which	 will  be  re-
       placed by the filename when the input preprocessor command is invoked.

       When less closes	a file opened in such a	way, it	will call another pro-
       gram, called the	input postprocessor, which  may	 perform  any  desired
       clean-up	 action	 (such	as  deleting  the  replacement file created by
       LESSOPEN).  This	program	receives two command line arguments, the orig-
       inal  filename  as entered by the user, and the name of the replacement
       file.  To set up	an input postprocessor,	set the	LESSCLOSE  environment
       variable	 to a command line which will invoke your input	postprocessor.
       It may include two occurrences of the string "%s";  the	first  is  re-
       placed  with the	original name of the file and the second with the name
       of the replacement file,	which was output by LESSOPEN.

       For example, on many Unix systems, these	two scripts will allow you  to
       keep files in compressed	format,	but still let less view	them directly:

       lessopen.sh:
	    #! /bin/sh
	    case "$1" in
	    *.Z) TEMPFILE=$(mktemp)
		 uncompress -c $1  >$TEMPFILE  2>/dev/null
		 if [ -s $TEMPFILE ]; then
		      echo $TEMPFILE
		 else
		      rm -f $TEMPFILE
		 fi
		 ;;
	    esac

       lessclose.sh:
	    #! /bin/sh
	    rm $2

       To  use these scripts, put them both where they can be executed and set
       LESSOPEN="lessopen.sh %s",  and	LESSCLOSE="lessclose.sh	%s %s".	  More
       complex	LESSOPEN  and LESSCLOSE	scripts	may be written to accept other
       types of	compressed files, and so on.

       It is also possible to set up an	input preprocessor to  pipe  the  file
       data  directly to less, rather than putting the data into a replacement
       file.  This avoids the need to decompress the entire file before	start-
       ing to view it.	An input preprocessor that works this way is called an
       input pipe.  An input pipe, instead of writing the name of  a  replace-
       ment file on its	standard output, writes	the entire contents of the re-
       placement file on its standard output.  If  the	input  pipe  does  not
       write  any characters on	its standard output, then there	is no replace-
       ment file and less uses the original file, as normal.  To use an	 input
       pipe,  make  the	first character	in the LESSOPEN	environment variable a
       vertical	bar (|)	to signify that	the input  preprocessor	 is  an	 input
       pipe.   As  with	 non-pipe input	preprocessors, the command string must
       contain one occurrence of %s, which is replaced with  the  filename  of
       the input file.

       For  example, on	many Unix systems, this	script will work like the pre-
       vious example scripts:

       lesspipe.sh:
	    #! /bin/sh
	    case "$1" in
	    *.Z) uncompress -c $1  2>/dev/null
		 ;;
	    *)	 exit 1
		 ;;
	    esac
	    exit $?

       To  use	this  script,  put  it	where  it  can	be  executed  and  set
       LESSOPEN="|lesspipe.sh %s".

       Note that a preprocessor	cannot output an empty file, since that	is in-
       terpreted as meaning there is no	replacement, and the original file  is
       used.   To  avoid  this,	if LESSOPEN starts with	two vertical bars, the
       exit status of the script becomes meaningful.  If the  exit  status  is
       zero,  the  output  is considered to be replacement text, even if it is
       empty.  If the exit status is nonzero, any output is  ignored  and  the
       original	 file  is  used.   For compatibility with previous versions of
       less, if	LESSOPEN starts	with only one vertical bar, the	exit status of
       the preprocessor	is ignored.

       When  an	input pipe is used, a LESSCLOSE	postprocessor can be used, but
       it is usually not necessary since there is no replacement file to clean
       up.   In	 this  case, the replacement file name passed to the LESSCLOSE
       postprocessor is	"-".

       For compatibility with previous versions	of less, the input  preproces-
       sor or pipe is not used if less is viewing standard input.  However, if
       the first character of LESSOPEN is a dash (-), the  input  preprocessor
       is  used	 on  standard input as well as other files.  In	this case, the
       dash is not considered to be part  of  the  preprocessor	 command.   If
       standard	input is being viewed, the input preprocessor is passed	a file
       name consisting of a single dash.  Similarly, if	the first two  charac-
       ters  of	 LESSOPEN  are vertical	bar and	dash (|-) or two vertical bars
       and a dash (||-), the input pipe	is used	on standard input as  well  as
       other files.  Again, in this case the dash is not considered to be part
       of the input pipe command.

NATIONAL CHARACTER SETS
       There are three types of	characters in the input	file:

       normal characters
	      can be displayed directly	to the screen.

       control characters
	      should not be displayed directly,	but are	expected to  be	 found
	      in ordinary text files (such as backspace	and tab).

       binary characters
	      should  not  be  displayed  directly  and	are not	expected to be
	      found in text files.

       A "character set" is simply a description of which characters are to be
       considered  normal,  control,  and binary.  The LESSCHARSET environment
       variable	may be used to select a	character set.	 Possible  values  for
       LESSCHARSET are:

       ascii  BS,  TAB,	NL, CR,	and formfeed are control characters, all chars
	      with values between 32 and 126 are normal, and  all  others  are
	      binary.

       iso8859
	      Selects  an  ISO 8859 character set.  This is the	same as	ASCII,
	      except characters	between	160 and	 255  are  treated  as	normal
	      characters.

       latin1 Same as iso8859.

       latin9 Same as iso8859.

       dos    Selects a	character set appropriate for MS-DOS.

       ebcdic Selects an EBCDIC	character set.

       IBM-1047
	      Selects  an  EBCDIC  character set used by OS/390	Unix Services.
	      This is the EBCDIC analogue of latin1.  You get similar  results
	      by setting either	LESSCHARSET=IBM-1047 or	LC_CTYPE=en_US in your
	      environment.

       koi8-r Selects a	Russian	character set.

       next   Selects a	character set appropriate for NeXT computers.

       utf-8  Selects the UTF-8	encoding  of  the  ISO	10646  character  set.
	      UTF-8  is	 special  in that it supports multi-byte characters in
	      the input	file.  It is the only character	set that supports mul-
	      ti-byte characters.

       windows
	      Selects  a  character  set appropriate for Microsoft Windows (cp
	      1251).

       In rare cases, it may be	desired	to tailor less to use a	character  set
       other  than the ones definable by LESSCHARSET.  In this case, the envi-
       ronment variable	LESSCHARDEF can	be used	to define a character set.  It
       should be set to	a string where each character in the string represents
       one character in	the character set.  The	character "." is  used	for  a
       normal  character, "c" for control, and "b" for binary.	A decimal num-
       ber may be used for repetition.	 For  example,	"bccc4b."  would  mean
       character  0 is binary, 1, 2 and	3 are control, 4, 5, 6 and 7 are bina-
       ry, and 8 is normal.  All characters after the last are taken to	be the
       same  as	 the last, so characters 9 through 255 would be	normal.	 (This
       is an example, and does not necessarily represent  any  real  character
       set.)

       This  table  shows the value of LESSCHARDEF which is equivalent to each
       of the possible values for LESSCHARSET:

	    ascii      8bcccbcc18b95.b
	    dos	       8bcccbcc12bc5b95.b.
	    ebcdic     5bc6bcc7bcc41b.9b7.9b5.b..8b6.10b6.b9.7b
		       9.8b8.17b3.3b9.7b9.8b8.6b10.b.b.b.
	    IBM-1047   4cbcbc3b9cbccbccbb4c6bcc5b3cbbc4bc4bccbc
		       191.b
	    iso8859    8bcccbcc18b95.33b.
	    koi8-r     8bcccbcc18b95.b128.
	    latin1     8bcccbcc18b95.33b.
	    next       8bcccbcc18b95.bb125.bb

       If neither LESSCHARSET nor LESSCHARDEF is set, but any of  the  strings
       "UTF-8",	 "UTF8", "utf-8" or "utf8" is found in the LC_ALL, LC_CTYPE or
       LANG environment	variables, then	the default character set is utf-8.

       If that string is not found, but	your system supports the setlocale in-
       terface,	 less will use setlocale to determine the character set.  set-
       locale is controlled by setting the LANG	or LC_CTYPE environment	 vari-
       ables.

       Finally,	 if the	setlocale interface is also not	available, the default
       character set is	latin1.

       Control and  binary  characters	are  displayed	in  standout  (reverse
       video).	Each such character is displayed in caret notation if possible
       (e.g. ^A	for control-A).	 Caret notation	is used	only if	inverting  the
       0100 bit	results	in a normal printable character.  Otherwise, the char-
       acter is	displayed as a hex number in angle brackets.  This format  can
       be  changed by setting the LESSBINFMT environment variable.  LESSBINFMT
       may begin with a	"*" and	one character to select	the display attribute:
       "*k"  is	 blinking, "*d"	is bold, "*u" is underlined, "*s" is standout,
       and "*n"	is normal.  If LESSBINFMT does not begin with  a  "*",	normal
       attribute  is  assumed.	 The remainder of LESSBINFMT is	a string which
       may include one printf-style escape sequence (a % followed by x,	X,  o,
       d,  etc.).   For	 example, if LESSBINFMT	is "*u[%x]", binary characters
       are displayed in	underlined hexadecimal surrounded  by  brackets.   The
       default	if no LESSBINFMT is specified is "*s<%02X>".  Warning: the re-
       sult of expanding the character via LESSBINFMT must  be	less  than  31
       characters.

       When the	character set is utf-8,	the LESSUTFBINFMT environment variable
       acts similarly to LESSBINFMT but	it applies to Unicode code points that
       were  successfully  decoded but are unsuitable for display (e.g., unas-
       signed code points).  Its default  value	 is  "<U+%04lX>".   Note  that
       LESSUTFBINFMT  and  LESSBINFMT  share  their  display attribute setting
       ("*x") so specifying one	will affect both; LESSUTFBINFMT	is read	 after
       LESSBINFMT  so  its  setting,  if any, will have	priority.  Problematic
       octets in a UTF-8 file (octets of a truncated  sequence,	 octets	 of  a
       complete	 but  non-shortest  form  sequence,  invalid octets, and stray
       trailing	octets)	are displayed individually using LESSBINFMT so	as  to
       facilitate diagnostic of	how the	UTF-8 file is ill-formed.

PROMPTS
       The  -P option allows you to tailor the prompt to your preference.  The
       string given to the -P option replaces  the  specified  prompt  string.
       Certain characters in the string	are interpreted	specially.  The	prompt
       mechanism is rather complicated to provide flexibility, but  the	 ordi-
       nary  user need not understand the details of constructing personalized
       prompt strings.

       A percent sign followed by a single character is	expanded according  to
       what the	following character is:

       %bX    Replaced	by the byte offset into	the current input file.	 The b
	      is followed by a single character	(shown as X above) which spec-
	      ifies  the line whose byte offset	is to be used.	If the charac-
	      ter is a "t", the	byte offset of the top line in the display  is
	      used, an "m" means use the middle	line, a	"b" means use the bot-
	      tom line,	a "B" means use	the line just after the	 bottom	 line,
	      and  a  "j"  means use the "target" line,	as specified by	the -j
	      option.

       %B     Replaced by the size of the current input	file.

       %c     Replaced by the column number of the text	appearing in the first
	      column of	the screen.

       %dX    Replaced	by  the	 page number of	a line in the input file.  The
	      line to be used is determined by the X, as with the %b option.

       %D     Replaced by the number of	pages in the input  file,  or  equiva-
	      lently, the page number of the last line in the input file.

       %E     Replaced	by the name of the editor (from	the VISUAL environment
	      variable,	or the EDITOR environment variable if  VISUAL  is  not
	      defined).	 See the discussion of the LESSEDIT feature below.

       %f     Replaced by the name of the current input	file.

       %F     Replaced	by the last component of the name of the current input
	      file.

       %g     Replaced by the shell-escaped name of the	 current  input	 file.
	      This  is useful when the expanded	string will be used in a shell
	      command, such as in LESSEDIT.

       %i     Replaced by the index of the current file	in the list  of	 input
	      files.

       %lX    Replaced	by  the	 line number of	a line in the input file.  The
	      line to be used is determined by the X, as with the %b option.

       %L     Replaced by the line number of the last line in the input	file.

       %m     Replaced by the total number of input files.

       %pX    Replaced by the percent into the current input  file,  based  on
	      byte  offsets.  The line used is determined by the X as with the
	      %b option.

       %PX    Replaced by the percent into the current input  file,  based  on
	      line  numbers.  The line used is determined by the X as with the
	      %b option.

       %s     Same as %B.

       %t     Causes any trailing spaces to be removed.	 Usually used  at  the
	      end of the string, but may appear	anywhere.

       %T     Normally	expands	 to the	word "file".  However if viewing files
	      via a tags list using the	-t option,  it	expands	 to  the  word
	      "tag".

       %x     Replaced by the name of the next input file in the list.

       If any item is unknown (for example, the	file size if input is a	pipe),
       a question mark is printed instead.

       The format of the prompt	string can be  changed	depending  on  certain
       conditions.   A	question mark followed by a single character acts like
       an "IF":	depending on the following character, a	condition is  evaluat-
       ed.   If	 the  condition	is true, any characters	following the question
       mark and	condition character, up	to  a  period,	are  included  in  the
       prompt.	 If  the condition is false, such characters are not included.
       A colon appearing between the question mark and the period can be  used
       to establish an "ELSE": any characters between the colon	and the	period
       are included in the string if and only if the IF	 condition  is	false.
       Condition characters (which follow a question mark) may be:

       ?a     True if any characters have been included	in the prompt so far.

       ?bX    True if the byte offset of the specified line is known.

       ?B     True if the size of current input	file is	known.

       ?c     True if the text is horizontally shifted (%c is not zero).

       ?dX    True if the page number of the specified line is known.

       ?e     True if at end-of-file.

       ?f     True  if	there is an input filename (that is, if	input is not a
	      pipe).

       ?lX    True if the line number of the specified line is known.

       ?L     True if the line number of the last line in the file is known.

       ?m     True if there is more than one input file.

       ?n     True if this is the first	prompt in a new	input file.

       ?pX    True if the percent into the current input file, based  on  byte
	      offsets, of the specified	line is	known.

       ?PX    True  if	the percent into the current input file, based on line
	      numbers, of the specified	line is	known.

       ?s     Same as "?B".

       ?x     True if there is a next input file (that is, if the current  in-
	      put file is not the last one).

       Any characters other than the special ones (question mark, colon, peri-
       od, percent, and	backslash) become literally part of the	 prompt.   Any
       of  the	special	 characters may	be included in the prompt literally by
       preceding it with a backslash.

       Some examples:

       ?f%f:Standard input.

       This prompt prints the filename,	if known; otherwise the	string	"Stan-
       dard input".

       ?f%f .?ltLine %lt:?pt%pt\%:?btByte %bt:-...

       This  prompt  would print the filename, if known.  The filename is fol-
       lowed by	the line number, if known, otherwise  the  percent  if	known,
       otherwise the byte offset if known.  Otherwise, a dash is printed.  No-
       tice how	each question mark has a matching period, and how the %	 after
       the %pt is included literally by	escaping it with a backslash.

       ?n?f%f .?m(%T %i	of %m) ..?e(END) ?x- Next\: %x..%t";

       This  prints  the  filename if this is the first	prompt in a file, fol-
       lowed by	the "file N of N" message if there  is	more  than  one	 input
       file.   Then,  if  we are at end-of-file, the string "(END)" is printed
       followed	by the name of the next	file, if there is one.	 Finally,  any
       trailing	spaces are truncated.  This is the default prompt.  For	refer-
       ence, here are the defaults for the other two prompts (-m  and  -M  re-
       spectively).  Each is broken into two lines here	for readability	only.

       ?n?f%f .?m(%T %i	of %m) ..?e(END) ?x- Next\: %x.:
	       ?pB%pB\%:byte %bB?s/%s...%t

       ?f%f .?n?m(%T %i	of %m) ..?ltlines %lt-%lb?L/%L.	:
	       byte %bB?s/%s. .?e(END) ?x- Next\: %x.:?pB%pB\%..%t

       And here	is the default message produced	by the = command:

       ?f%f .?m(%T %i of %m) .?ltlines %lt-%lb?L/%L. .
	       byte %bB?s/%s. ?e(END) :?pB%pB\%..%t

       The  prompt expansion features are also used for	another	purpose: if an
       environment variable LESSEDIT is	defined, it is used as the command  to
       be  executed when the v command is invoked.  The	LESSEDIT string	is ex-
       panded in the same way as the prompt strings.  The  default  value  for
       LESSEDIT	is:

	       %E ?lm+%lm. %g

       Note that this expands to the editor name, followed by a	+ and the line
       number, followed	by the shell-escaped file name.	 If your  editor  does
       not  accept the "+linenumber" syntax, or	has other differences in invo-
       cation syntax, the LESSEDIT variable can	be changed to modify this  de-
       fault.

SECURITY
       When  the  environment  variable	LESSSECURE is set to 1,	less runs in a
       "secure"	mode.  This means these	features are disabled:

	      !	     the shell command

	      |	     the pipe command

	      :e     the examine command.

	      v	     the editing command

	      s	 -o  log files

	      -k     use of lesskey files

	      -t     use of tags files

		     metacharacters in filenames, such as *

		     filename completion (TAB, ^L)

       Less can	also be	compiled to be permanently in "secure" mode.

COMPATIBILITY WITH MORE
       If the environment variable LESS_IS_MORE	is set to 1, or	if the program
       is  invoked via a file link named "more", less behaves (mostly) in con-
       formance	with the POSIX "more" command specification.   In  this	 mode,
       less behaves differently	in these ways:

       The -e option works differently.	 If the	-e option is not set, less be-
       haves as	if the -e option were set.  If the -e option is	set, less  be-
       haves as	if the -E option were set.

       The  -m	option	works  differently.   If the -m	option is not set, the
       medium prompt is	used, and it is	prefixed with the  string  "--More--".
       If the -m option	is set,	the short prompt is used.

       The  -n	option acts like the -z	option.	 The normal behavior of	the -n
       option is unavailable in	this mode.

       The parameter to	the -p option is taken to be  a	 less  command	rather
       than a search pattern.

       The  LESS  environment  variable	 is  ignored, and the MORE environment
       variable	is used	in its place.

ENVIRONMENT VARIABLES
       Environment variables may be specified either in	the system environment
       as  usual,  or  in a lesskey(1) file.  If environment variables are de-
       fined in	more than one place, variables defined in a local lesskey file
       take precedence over variables defined in the system environment, which
       take precedence over variables defined in the system-wide lesskey file.

       COLUMNS
	      Sets the number of columns on the	screen.	 Takes precedence over
	      the  number  of columns specified	by the TERM variable.  (But if
	      you  have	 a  windowing  system  which  supports	TIOCGWINSZ  or
	      WIOCGETD,	 the  window  system's	idea  of the screen size takes
	      precedence over the LINES	and COLUMNS environment	variables.)

       EDITOR The name of the editor (used for the v command).

       HOME   Name of the user's home directory	(used to find a	 lesskey  file
	      on Unix and OS/2 systems).

       HOMEDRIVE, HOMEPATH
	      Concatenation  of	 the  HOMEDRIVE	and HOMEPATH environment vari-
	      ables is the name	of the user's home directory if	the HOME vari-
	      able is not set (only in the Windows version).

       INIT   Name  of	the user's init	directory (used	to find	a lesskey file
	      on OS/2 systems).

       LANG   Language for determining the character set.

       LC_CTYPE
	      Language for determining the character set.

       LESS   Options which are	passed to less automatically.

       LESSANSIENDCHARS
	      Characters which may end an ANSI color escape sequence  (default
	      "m").

       LESSANSIMIDCHARS
	      Characters  which	 may  appear between the ESC character and the
	      end  character  in  an  ANSI  color  escape  sequence   (default
	      "0123456789:;[?!"'#%()*+ ".

       LESSBINFMT
	      Format for displaying non-printable, non-control characters.

       LESSCHARDEF
	      Defines a	character set.

       LESSCHARSET
	      Selects a	predefined character set.

       LESSCLOSE
	      Command line to invoke the (optional) input-postprocessor.

       LESSECHO
	      Name of the lessecho program (default "lessecho").  The lessecho
	      program is needed	to expand metacharacters, such as * and	?,  in
	      filenames	on Unix	systems.

       LESSEDIT
	      Editor  prototype	 string	(used for the v	command).  See discus-
	      sion under PROMPTS.

       LESSGLOBALTAGS
	      Name of the command used by the -t option	to find	 global	 tags.
	      Normally	should be set to "global" if your system has the glob-
	      al(1) command.  If not set, global tags are not used.

       LESSHISTFILE
	      Name of the history file used to remember	 search	 commands  and
	      shell  commands  between	invocations of less.  If set to	"-" or
	      "/dev/null", a  history  file  is	 not  used.   The  default  is
	      "$XDG_DATA_HOME/lesshst"	or  "$HOME/.lesshst"  on Unix systems,
	      "$HOME/_lesshst"	 on    DOS    and    Windows	systems,    or
	      "$HOME/lesshst.ini" or "$INIT/lesshst.ini" on OS/2 systems.

       LESSHISTSIZE
	      The maximum number of commands to	save in	the history file.  The
	      default is 100.

       LESSKEYIN
	      Name of the default lesskey source file.

       LESSKEY
	      Name  of	the  default  lesskey  binary  file.  (Not   used   if
	      "$LESSKEYIN" exists.)

       LESSKEYIN_SYSTEM
	      Name of the default system-wide lesskey source file.

       LESSKEY_SYSTEM
	      Name  of	the default system-wide	lesskey	binary file. (Not used
	      if "$LESSKEYIN_SYSTEM" exists.)

       LESSMETACHARS
	      List of characters which are considered "metacharacters" by  the
	      shell.

       LESSMETAESCAPE
	      Prefix  which  less will add before each metacharacter in	a com-
	      mand sent	to the shell.  If LESSMETAESCAPE is an	empty  string,
	      commands	containing  metacharacters  will  not be passed	to the
	      shell.

       LESSOPEN
	      Command line to invoke the (optional) input-preprocessor.

       LESSSECURE
	      Runs less	in "secure" mode.  See discussion under	SECURITY.

       LESSSEPARATOR
	      String to	be appended to a directory name	 in  filename  comple-
	      tion.

       LESSUTFBINFMT
	      Format for displaying non-printable Unicode code points.

       LESS_IS_MORE
	      Emulate the more(1) command.

       LINES  Sets  the	 number	of lines on the	screen.	 Takes precedence over
	      the number of lines specified by the TERM	variable.  (But	if you
	      have  a  windowing system	which supports TIOCGWINSZ or WIOCGETD,
	      the window system's idea of the  screen  size  takes  precedence
	      over the LINES and COLUMNS environment variables.)

       MORE   Options  which  are passed to less automatically when running in
	      more compatible mode.

       PATH   User's search path (used to find a lesskey file  on  MS-DOS  and
	      OS/2 systems).

       SHELL  The  shell  used	to execute the ! command, as well as to	expand
	      filenames.

       TERM   The type of terminal on which less is being run.

       VISUAL The name of the editor (used for the v command).

SEE ALSO
       lesskey(1)

COPYRIGHT
       Copyright (C) 1984-2021	Mark Nudelman

       less is part of the GNU project and is free software.  You  can	redis-
       tribute	it and/or modify it under the terms of either (1) the GNU Gen-
       eral Public License as published	by the Free  Software  Foundation;  or
       (2) the Less License.  See the file README in the less distribution for
       more details regarding redistribution.  You should have received	a copy
       of  the	GNU General Public License along with the source for less; see
       the file	COPYING.  If not, write	to the Free  Software  Foundation,  59
       Temple  Place, Suite 330, Boston, MA  02111-1307, USA.  You should also
       have received a copy of the Less	License; see the file LICENSE.

       less is distributed in the hope that it will be useful, but WITHOUT ANY
       WARRANTY;  without even the implied warranty of MERCHANTABILITY or FIT-
       NESS FOR	A PARTICULAR PURPOSE.  See the GNU General Public License  for
       more details.

AUTHOR
       Mark Nudelman
       Report bugs at https://github.com/gwsw/less/issues.
       For more	information, see the less homepage at
       https://greenwoodsoftware.com/less

			   Version 590:	03 Jun 2021		       LESS(1)

NAME | SYNOPSIS | DESCRIPTION | COMMANDS | OPTIONS | LINE EDITING | KEY BINDINGS | INPUT PREPROCESSOR | NATIONAL CHARACTER SETS | PROMPTS | SECURITY | COMPATIBILITY WITH MORE | ENVIRONMENT VARIABLES | SEE ALSO | COPYRIGHT | AUTHOR

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