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Diff for /mandoc/mandoc_headers.3 between version 1.9 and 1.33

version 1.9, 2017/03/30 22:22:05 version 1.33, 2020/03/13 15:32:28
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 .Dd December 1, 2014  .\"     $Id$
   .\"
   .\" Copyright (c) 2014-2020 Ingo Schwarze <schwarze@openbsd.org>
   .\"
   .\" Permission to use, copy, modify, and distribute this software for any
   .\" purpose with or without fee is hereby granted, provided that the above
   .\" copyright notice and this permission notice appear in all copies.
   .\"
   .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   .\"
   .Dd $Mdocdate$
 .Dt MANDOC_HEADERS 3  .Dt MANDOC_HEADERS 3
 .Os  .Os
 .Sh NAME  .Sh NAME
Line 25  separate from each other:
Line 41  separate from each other:
 .Pp  .Pp
 .Bl -dash -offset indent -compact  .Bl -dash -offset indent -compact
 .It  .It
   .Xr roff 7
   parser
   .It
 .Xr mdoc 7  .Xr mdoc 7
 parser  parser
 .It  .It
 .Xr man 7  .Xr man 7
 parser  parser
 .It  .It
 .Xr roff 7  
 parser  
 .It  
 .Xr tbl 7  .Xr tbl 7
 parser  parser
 .It  .It
Line 45  terminal formatters
Line 61  terminal formatters
 HTML formatters  HTML formatters
 .It  .It
 search tools  search tools
   .It
   main programs
 .El  .El
 .Pp  .Pp
 Note that mere usage of an opaque struct type does  Note that mere usage of an opaque struct type does
Line 56  any other mandoc header.
Line 74  any other mandoc header.
 These headers should be included before any other mandoc headers.  These headers should be included before any other mandoc headers.
 .Bl -tag -width Ds  .Bl -tag -width Ds
 .It Qq Pa mandoc_aux.h  .It Qq Pa mandoc_aux.h
   Memory allocation utility functions; can be used everywhere.
   .Pp
 Requires  Requires
 .In sys/types.h  .In sys/types.h
 for  for
 .Vt size_t .  .Vt size_t .
 Provides the utility functions documented in  .Pp
   Provides the functions documented in
 .Xr mandoc_malloc 3 .  .Xr mandoc_malloc 3 .
 .It Qq Pa mandoc_ohash.h  .It Qq Pa mandoc_ohash.h
   Hashing utility functions; can be used everywhere.
   .Pp
   Requires
   .In stddef.h
   for
   .Vt ptrdiff_t
   and
   .In stdint.h
   for
   .Vt uint32_t .
   .Pp
 Includes  Includes
 .In ohash.h  .In ohash.h
 and provides  and provides
 .Fn mandoc_ohash_init .  .Fn mandoc_ohash_init .
 .It Qq Pa mandoc.h  .It Qq Pa mandoc.h
   Error handling, escape sequence, and character utilities;
   can be used everywhere.
   .Pp
 Requires  Requires
 .In sys/types.h  .In sys/types.h
 for  for
 .Vt size_t .  .Vt size_t
   and
   .In stdio.h
   for
   .Vt FILE .
 .Pp  .Pp
 Provides  Provides
 .Vt enum mandoc_esc ,  .Vt enum mandoc_esc ,
 .Vt enum mandocerr ,  .Vt enum mandocerr ,
 .Vt enum mandoclevel ,  .Vt enum mandoclevel ,
 .Vt enum tbl_cellt ,  
 .Vt enum tbl_datt ,  
 .Vt enum tbl_spant ,  
 .Vt enum eqn_boxt ,  
 .Vt enum eqn_fontt ,  
 .Vt enum eqn_pilet ,  
 .Vt enum eqn_post ,  
 .Vt struct tbl_opts ,  
 .Vt struct tbl_cell ,  
 .Vt struct tbl_row ,  
 .Vt struct tbl_dat ,  
 .Vt struct tbl_span ,  
 .Vt struct eqn_box ,  
 .Vt struct eqn ,  
 the function prototype typedef  
 .Fn mandocmsg ,  
 the function  the function
 .Xr mandoc_escape 3 ,  .Xr mandoc_escape 3 ,
 the functions described in  the functions described in
 .Xr mchars_alloc 3 ,  .Xr mchars_alloc 3 ,
 and the functions  and the
 .Fn mparse_*  .Fn mandoc_msg*
 described in  functions.
 .Xr mandoc 3 .  
 .Pp  
 Uses the opaque type  
 .Vt struct mparse  
 from  
 .Pa read.c  
 for function prototypes.  
 Uses the type  
 .Vt struct roff_man  
 from  
 .Pa roff.h  
 as an opaque type for function prototypes.  
 .It Qq Pa roff.h  .It Qq Pa roff.h
   Common data types for all syntax trees and related functions;
   can be used everywhere.
   .Pp
 Provides  Provides
   .Vt enum mandoc_os ,
 .Vt enum mdoc_endbody ,  .Vt enum mdoc_endbody ,
 .Vt enum roff_macroset ,  .Vt enum roff_macroset ,
 .Vt enum roff_next ,  
 .Vt enum roff_sec ,  .Vt enum roff_sec ,
   .Vt enum roff_tok ,
 .Vt enum roff_type ,  .Vt enum roff_type ,
 .Vt struct roff_man ,  .Vt struct roff_man ,
 .Vt struct roff_meta ,  .Vt struct roff_meta ,
 .Vt struct roff_node ,  .Vt struct roff_node ,
   the constant array
   .Va roff_name
 and the function  and the function
 .Fn deroff .  .Fn deroff .
 .Pp  .Pp
 Uses pointers to the types  Uses pointers to the types
   .Vt struct ohash
   from
   .Qq Pa mandoc_ohash.h ,
 .Vt struct mdoc_arg  .Vt struct mdoc_arg
 and  and
 .Vt union mdoc_data  .Vt union mdoc_data
 from  from
 .Pa mdoc.h  .Qq Pa mdoc.h ,
   .Vt struct tbl_span
   from
   .Qq Pa tbl.h ,
   and
   .Vt struct eqn_box
   from
   .Qq Pa eqn.h
 as opaque struct members.  as opaque struct members.
   .It Qq Pa tbl.h
   Data structures for the
   .Xr tbl 7
   parse tree; can be used everywhere.
   .Pp
   Requires
   .In sys/types.h
   for
   .Vt size_t .
   .Pp
   Provides
   .Vt enum tbl_cellt ,
   .Vt enum tbl_datt ,
   .Vt enum tbl_spant ,
   .Vt struct tbl_opts ,
   .Vt struct tbl_cell ,
   .Vt struct tbl_row ,
   .Vt struct tbl_dat ,
   and
   .Vt struct tbl_span .
   .It Qq Pa eqn.h
   Data structures for the
   .Xr eqn 7
   parse tree; can be used everywhere.
   .Pp
   Requires
   .In sys/types.h
   for
   .Vt size_t .
   .Pp
   Provides
   .Vt enum eqn_boxt ,
   .Vt enum eqn_fontt ,
   .Vt enum eqn_post ,
   and
   .Vt struct eqn_box .
   .It Qq Pa mandoc_parse.h
   Top level parser interface, for use in the main program
   and in the main parser, but not in formatters.
   .Pp
   Requires
   .Qq Pa mandoc.h
   for
   .Vt enum mandocerr
   and
   .Vt enum mandoclevel
   and
   .Qq Pa roff.h
   for
   .Vt enum mandoc_os .
   .Pp
   Uses the opaque type
   .Vt struct mparse
   from
   .Pa read.c
   for function prototypes.
   Uses
   .Vt struct roff_meta
   from
   .Qq Pa roff.h
   as an opaque type for function prototypes.
   .It Qq Pa mandoc_xr.h
   Cross reference validation; intended for use in the main program
   and in parsers, but not in formatters.
   .Pp
   Provides
   .Vt struct mandoc_xr
   and the functions
   .Fn mandoc_xr_reset ,
   .Fn mandoc_xr_add ,
   .Fn mandoc_xr_get ,
   and
   .Fn mandoc_xr_free .
   .It Qq Pa tag.h
   Internal interfaces to tag syntax tree nodes,
   for use by validation modules only.
   .Pp
   Requires
   .In limits.h
   for
   .Dv INT_MAX .
   .Pp
   Provides the functions
   .Fn tag_alloc ,
   .Fn tag_put ,
   .Fn tag_check ,
   and
   .Fn tag_free
   and some
   .Dv TAG_*
   constants.
   .Pp
   Uses the type
   .Vt struct roff_node
   from
   .Qq Pa roff.h
   as an opaque type for function prototypes.
 .El  .El
 .Pp  .Pp
 The following two require  The following two require
Line 164  and the functions
Line 288  and the functions
 described in  described in
 .Xr mandoc 3 .  .Xr mandoc 3 .
 .Pp  .Pp
 Uses the type  Uses the types
   .Vt struct roff_node
   from
   .Qq Pa roff.h
   and
 .Vt struct roff_man  .Vt struct roff_man
 from  from
 .Pa roff.h  .Qq Pa roff_int.h
 as an opaque type for function prototypes.  as opaque types for function prototypes.
 .Pp  .Pp
 When this header is included, the same file should not include  When this header is included, the same file should not include
 .Pa libman.h  internals of different parsers.
 or  
 .Pa libroff.h .  
 .It Qq Pa man.h  .It Qq Pa man.h
 Provides the functions  Provides the functions
 .Fn man_*  .Fn man_*
 described in  described in
 .Xr mandoc 3 .  .Xr mandoc 3 .
 .Pp  .Pp
 Uses the opaque type  
 .Vt struct mparse  
 from  
 .Pa read.c  
 for function prototypes.  
 Uses the type  Uses the type
 .Vt struct roff_man  .Vt struct roff_man
 from  from
 .Pa roff.h  .Qq Pa roff.h
 as an opaque type for function prototypes.  as an opaque type for function prototypes.
 .Pp  .Pp
 When this header is included, the same file should not include  When this header is included, the same file should not include
 .Pa libmdoc.h  internals of different parsers.
 or  
 .Pa libroff.h .  
 .El  .El
 .Ss Parser internals  .Ss Parser internals
 The following headers require inclusion of a parser interface header  Most of the following headers require inclusion of a parser interface header
 before they can be included.  before they can be included.
 All parser interface headers should precede all parser internal headers.  All parser interface headers should precede all parser internal headers.
 When any parser internal headers are included, the same file should  When any parser internal headers are included, the same file should
Line 214  for
Line 333  for
 .Vt enum mandocerr .  .Vt enum mandocerr .
 .Pp  .Pp
 Provides  Provides
 .Vt enum rofferr ,  
 .Vt struct buf ,  .Vt struct buf ,
 utility functions needed by multiple parsers,  utility functions needed by multiple parsers,
 and the top-level functions to call the parsers.  and the top-level functions to call the parsers.
 .Pp  .Pp
 Uses the opaque types  Uses the opaque type
 .Vt struct mparse  
 from  
 .Pa read.c  
 and  
 .Vt struct roff  .Vt struct roff
 from  from
 .Pa roff.c  .Pa roff.c
 for function prototypes.  for function prototypes.
 Uses the types  Uses the type
 .Vt struct tbl_span  
 and  
 .Vt struct eqn  
 from  
 .Pa mandoc.h  
 and  
 .Vt struct roff_man  .Vt struct roff_man
 from  from
 .Pa roff.h  .Qq Pa roff.h
 as opaque types for function prototypes.  as an opaque type for function prototypes.
 .It Qq Pa roff_int.h  .It Qq Pa roff_int.h
   Parser internals shared by multiple parsers.
   Can be used in all parsers, but not in main programs or formatters.
   .Pp
 Requires  Requires
 .Qq Pa roff.h  .Qq Pa roff.h
 for  for
 .Vt enum roff_type .  .Vt enum roff_type
   and
   .Vt enum roff_tok .
 .Pp  .Pp
 Provides functions named  Provides
   .Vt enum roff_next ,
   .Vt struct roff_man ,
   functions named
 .Fn roff_*  .Fn roff_*
 to handle roff nodes and the two special functions  to handle roff nodes,
   .Fn roffhash_alloc ,
   .Fn roffhash_find ,
   .Fn roffhash_free ,
   and
   .Fn roff_validate ,
   and the two special functions
 .Fn man_breakscope  .Fn man_breakscope
 and  and
 .Fn mdoc_argv_free  .Fn mdoc_argv_free
 because the latter two are needed by  because the latter two are needed by
 .Qq Pa roff.c .  .Pa roff.c .
 .Pp  .Pp
 Uses the types  Uses the types
 .Vt struct eqn  .Vt struct ohash
 and  
 .Vt struct tbl_span  
 from  from
 .Pa mandoc.h ,  .Qq Pa mandoc_ohash.h ,
 .Vt struct roff_man  
 and  
 .Vt struct roff_node  .Vt struct roff_node
   and
   .Vt struct roff_meta
 from  from
 .Pa roff.h ,  .Qq Pa roff.h ,
   .Vt struct roff
   from
   .Pa roff.c ,
 and  and
 .Vt struct mdoc_arg  .Vt struct mdoc_arg
 from  from
 .Pa mdoc.h  .Qq Pa mdoc.h
 as opaque types for function prototypes.  as opaque types for function prototypes.
 .It Qq Pa libmdoc.h  .It Qq Pa libmdoc.h
 Requires  Requires
 .Qq Pa mdoc.h  .Qq Pa roff.h
 for  for
 .Vt enum mdoc_*  .Vt enum roff_tok
 and  and
 .Vt struct mdoc_* .  .Vt enum roff_sec .
 .Pp  .Pp
 Provides  Provides
 .Vt enum margserr ,  .Vt enum margserr ,
Line 286  and many functions internal to the
Line 409  and many functions internal to the
 .Xr mdoc 7  .Xr mdoc 7
 parser.  parser.
 .Pp  .Pp
 Uses the opaque type  
 .Vt struct mparse  
 from  
 .Pa read.c .  
 Uses the types  Uses the types
   .Vt struct roff_node
   from
   .Qq Pa roff.h ,
 .Vt struct roff_man  .Vt struct roff_man
   from
   .Qq Pa roff_int.h ,
 and  and
 .Vt struct roff_node  .Vt struct mdoc_arg
 from  from
 .Pa roff.h  .Qq Pa mdoc.h
 as opaque types for function prototypes.  as opaque types for function prototypes.
 .Pp  .Pp
 When this header is included, the same file should not include  When this header is included, the same file should not include
 .Pa man.h ,  interfaces of different parsers.
 .Pa libman.h ,  
 or  
 .Pa libroff.h .  
 .It Qq Pa libman.h  .It Qq Pa libman.h
   Requires
   .Qq Pa roff.h
   for
   .Vt enum roff_tok .
   .Pp
 Provides  Provides
 .Vt struct man_macro  .Vt struct man_macro
 and some functions internal to the  and some functions internal to the
Line 311  and some functions internal to the
Line 437  and some functions internal to the
 parser.  parser.
 .Pp  .Pp
 Uses the types  Uses the types
 .Vt struct roff_man  
 and  
 .Vt struct roff_node  .Vt struct roff_node
 from  from
 .Pa roff.h  .Qq Pa roff.h
   and
   .Vt struct roff_man
   from
   .Qq Pa roff_int.h
 as opaque types for function prototypes.  as opaque types for function prototypes.
 .Pp  .Pp
 When this header is included, the same file should not include  When this header is included, the same file should not include
 .Pa mdoc.h ,  interfaces of different parsers.
 .Pa libmdoc.h ,  .It Qq Pa eqn_parse.h
 or  External interface of the
 .Pa libroff.h .  .Xr eqn 7
 .It Qq Pa libroff.h  parser, for use in the
   .Xr roff 7
   and
   .Xr eqn 7
   parsers only.
   .Pp
 Requires  Requires
 .In sys/types.h  .In sys/types.h
 for  for
 .Vt size_t ,  .Vt size_t .
   .Pp
   Provides
   .Vt struct eqn_node
   and the functions
   .Fn eqn_alloc ,
   .Fn eqn_box_new ,
   .Fn eqn_box_free ,
   .Fn eqn_free ,
   .Fn eqn_parse ,
   .Fn eqn_read ,
   and
   .Fn eqn_reset .
   .Pp
   Uses the type
   .Vt struct eqn_box
   from
 .Qq Pa mandoc.h  .Qq Pa mandoc.h
 for  as an opaque type for function prototypes.
 .Vt struct tbl_*  Uses the types
   .Vt struct roff_node
   from
   .Qq Pa roff.h
 and  and
 .Vt struct eqn ,  .Vt struct eqn_def
   from
   .Pa eqn.c
   as opaque struct members.
   .Pp
   When this header is included, the same file should not include
   internals of different parsers.
   .It Qq Pa tbl_parse.h
   External interface of the
   .Xr tbl 7
   parser, for use in the
   .Xr roff 7
 and  and
 .Qq Pa libmandoc.h  .Xr tbl 7
   parsers only.
   .Pp
   Provides the functions documented in
   .Xr tbl 3 .
   .Pp
   Uses the types
   .Vt struct tbl_span
   from
   .Qq Pa tbl.h
   and
   .Vt struct tbl_node
   from
   .Qq Pa tbl_int.h
   as opaque types for function prototypes.
   .Pp
   When this header is included, the same file should not include
   internals of different parsers.
   .It Qq Pa tbl_int.h
   Internal interfaces of the
   .Xr tbl 7
   parser, for use inside the
   .Xr tbl 7
   parser only.
   .Pp
   Requires
   .Qq Pa tbl.h
 for  for
 .Vt enum rofferr .  .Vt struct tbl_opts .
 .Pp  .Pp
 Provides  Provides
 .Vt enum tbl_part ,  .Vt enum tbl_part ,
 .Vt struct tbl_node ,  .Vt struct tbl_node ,
 .Vt struct eqn_def ,  and the functions
 .Vt struct eqn_node ,  .Fn tbl_option ,
 and many functions internal to the  .Fn tbl_layout ,
 .Xr tbl 7  .Fn tbl_data ,
   .Fn tbl_cdata ,
 and  and
 .Xr eqn 7  .Fn tbl_reset .
 parsers.  
 .Pp  .Pp
 Uses the opaque type  
 .Vt struct mparse  
 from  
 .Pa read.c .  
 .Pp  
 When this header is included, the same file should not include  When this header is included, the same file should not include
 .Pa man.h ,  interfaces of different parsers.
 .Pa mdoc.h ,  
 .Pa libman.h ,  
 or  
 .Pa libmdoc.h .  
 .El  .El
 .Ss Formatter interface  .Ss Formatter interface
 These headers should be included after any parser interface headers.  These headers should be included after any parser interface headers.
Line 383  and
Line 563  and
 Uses  Uses
 .Vt struct tbl_span  .Vt struct tbl_span
 from  from
 .Pa mandoc.h  .Qq Pa mandoc.h
 as an opaque type for function prototypes.  as an opaque type for function prototypes.
 .Pp  .Pp
 When this header is included, the same file should not include  When this header is included, the same file should not include
 .Pa mansearch.h .  .Qq Pa mansearch.h .
 .It Qq Pa term.h  .It Qq Pa term.h
 Requires  Requires
 .In sys/types.h  .In sys/types.h
Line 406  Provides
Line 586  Provides
 .Vt enum termtype ,  .Vt enum termtype ,
 .Vt struct termp_tbl ,  .Vt struct termp_tbl ,
 .Vt struct termp ,  .Vt struct termp ,
   .Fn roff_term_pre ,
 and many terminal formatting functions.  and many terminal formatting functions.
 .Pp  .Pp
 Uses the opaque type  Uses the opaque type
Line 415  from
Line 596  from
 Uses  Uses
 .Vt struct tbl_span  .Vt struct tbl_span
 and  and
 .Vt struct eqn  .Vt struct eqn_box
 from  from
 .Pa mandoc.h  .Qq Pa mandoc.h
 and  and
 .Vt struct roff_meta  .Vt struct roff_meta
   and
   .Vt struct roff_node
 from  from
 .Pa roff.h  .Qq Pa roff.h
 as opaque types for function prototypes.  as opaque types for function prototypes.
 .Pp  .Pp
 When this header is included, the same file should not include  When this header is included, the same file should not include
 .Pa html.h  .Qq Pa html.h
 or  or
 .Pa mansearch.h .  .Qq Pa mansearch.h .
   .It Qq Pa tag_term.h
   Requires
   .In sys/types.h
   for
   .Vt size_t
   and
   .In stdio.h
   for
   .Vt FILE .
   .Pp
   Provides an interface to generate
   .Xr ctags 1
   files for the
   .Ic :t
   functionality mentioned in
   .Xr man 1 .
   .Pp
   Uses the type
   .Vt struct roff_node
   from
   .Qq Pa roff.h
   as an opaque type for function prototypes.
   .Pp
   When this header is included, the same file should not include
   .Qq Pa html.h
   or
   .Qq Pa mansearch.h .
 .It Qq Pa html.h  .It Qq Pa html.h
 Requires  Requires
 .In sys/types.h  .In sys/types.h
 for  for
 .Vt size_t ,  .Vt size_t ,
 .In stdio.h  .Qq Pa mandoc.h
 for  for
 .Dv BUFSIZ ,  .Vt enum mandoc_esc ,
   .Qq Pa roff.h
   for
   .Vt enum roff_tok ,
 and  and
 .Qq Pa out.h  .Qq Pa out.h
 for  for
Line 451  Provides
Line 664  Provides
 .Vt struct tagq ,  .Vt struct tagq ,
 .Vt struct htmlpair ,  .Vt struct htmlpair ,
 .Vt struct html ,  .Vt struct html ,
   .Fn roff_html_pre ,
 and many HTML formatting functions.  and many HTML formatting functions.
 .Pp  .Pp
   Uses
   .Vt struct tbl_span
   and
   .Vt struct eqn_box
   from
   .Qq Pa mandoc.h
   and
   .Vt struct roff_node
   from
   .Qq Pa roff.h
   as opaque types for function prototypes.
   .Pp
 When this header is included, the same file should not include  When this header is included, the same file should not include
 .Pa term.h  .Qq Pa term.h ,
   .Qq Pa tab_term.h ,
 or  or
 .Pa mansearch.h .  .Qq Pa mansearch.h .
 .It Qq Pa tag.h  
 Requires  
 .In sys/types.h  
 for  
 .Vt size_t .  
 .Pp  
 Provides an interface to generate  
 .Xr ctags 1  
 files for the  
 .Ic :t  
 functionality mentioned in  
 .Xr man 1 .  
 .It Qq Pa main.h  .It Qq Pa main.h
 Provides the top level steering functions for all formatters.  Provides the top level steering functions for all formatters.
 .Pp  .Pp
 Uses the type  Uses the type
 .Vt struct roff_man  .Vt struct roff_meta
 from  from
 .Pa roff.h  .Qq Pa roff.h
 as an opaque type for function prototypes.  as an opaque type for function prototypes.
 .It Qq Pa manconf.h  .It Qq Pa manconf.h
 Requires  Requires
Line 490  Provides
Line 705  Provides
 and the functions  and the functions
 .Fn manconf_parse ,  .Fn manconf_parse ,
 .Fn manconf_output ,  .Fn manconf_output ,
   .Fn manconf_free ,
 and  and
 .Fn manconf_free .  .Fn manpath_base .
 .It Qq Pa mansearch.h  .It Qq Pa mansearch.h
 Requires  Requires
 .In sys/types.h  .In sys/types.h
Line 514  and
Line 730  and
 Uses  Uses
 .Vt struct manpaths  .Vt struct manpaths
 from  from
 .Pa manconf.h  .Qq Pa manconf.h
 as an opaque type for function prototypes.  as an opaque type for function prototypes.
 .Pp  .Pp
 When this header is included, the same file should not include  When this header is included, the same file should not include
 .Pa out.h ,  .Qq Pa out.h ,
 .Pa term.h ,  .Qq Pa term.h ,
   .Qq Pa tab_term.h ,
 or  or
 .Pa html.h .  .Qq Pa html.h .
 .El  .El
Legend:
Removed from v.1.9  
changed lines
  Added in v.1.33
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