Lint-check (removed unused variable).

[mandoc.git] / mdoc.7

diff --git a/mdoc.7 b/mdoc.7
index 6f0749f2c07cc2376f8014b32166c4c61eacc9c3..8f5e8551ce2c8e46baa2d4fab4cf889120b2a331 100644 (file)
--- a/mdoc.7
+++ b/mdoc.7
@@ -1,40 +1,41 @@
-.\" $Id: mdoc.7,v 1.13 2009/03/22 08:52:27 kristaps Exp $
+.\"    $Id: mdoc.7,v 1.44 2009/07/17 12:08:08 kristaps Exp $

 .\"
 .\"

-.\" Copyright (c) 2009 Kristaps Dzonsons <kristaps@openbsd.org>
+.\" Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>

 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\"
 .\" 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.
+.\" 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.
+.\" 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: March 22 2009 $
-.Dt mdoc 7
+.Dd $Mdocdate: July 17 2009 $
+.Dt MDOC 7

 .Os
 .Os

-.\" SECTION
+.\" SECTION---------------------------------------------

 .Sh NAME
 .Nm mdoc
 .Sh NAME
 .Nm mdoc

-.Nd mdoc macro reference
-.\" SECTION
+.Nd mdoc language reference
+.\" SECTION---------------------------------------------

 .Sh DESCRIPTION
 The
 .Nm mdoc
 language is used to format 
 .Bx 
 .Ux
 .Sh DESCRIPTION
 The
 .Nm mdoc
 language is used to format 
 .Bx 
 .Ux

-manuals.  In this reference document, we describe the syntax, ontology
-and structure of the 
-.Nm
-language.
-.\" PARAGRAPH
+manuals.  In this reference document, we describe its syntax, structure,
+and usage.  Our reference implementation is
+.Xr mandoc 1 .
+The
+.Sx COMPATIBILITY
+section describes compatibility with 
+.Xr groff 1 .
+.\" PARAGRAPH------------

 .Pp
 An
 .Nm
 .Pp
 An
 .Nm


@@ -43,46 +44,30 @@ character
 .Sq \.
 are parsed for macros.  Other lines are interpreted within the scope of
 prior macros:
 .Sq \.
 are parsed for macros.  Other lines are interpreted within the scope of
 prior macros:

-.Bd -literal -offset XXX
+.Bd -literal -offset indent

 \&.Sh Macro lines change control state.
 Other lines are interpreted within the current state.
 .Ed
 \&.Sh Macro lines change control state.
 Other lines are interpreted within the current state.
 .Ed

-.\" PARAGRAPH
-.Pp
-Macros are two- or three-character sequences whose scope rules, rules
-that dictate handling of subsequent-line or same-line arguments, are
-governed by one of five classifications described in this document.
-.\" SECTION
+.\" SECTION---------------------------------------------

 .Sh INPUT ENCODING
 .Nm
 documents may contain only graphable 7-bit ASCII characters, the space
 .Sh INPUT ENCODING
 .Nm
 documents may contain only graphable 7-bit ASCII characters, the space

-character
-.Sq \  ,
-and, in certain circumstances, the tab character
-.Sq \et .
-All manuals must have
-.Sq \en
+character, and, in certain circumstances, the tab character.  All
+manuals must have
+.Ux

 line termination.  
 line termination.  

-.Pp
-The only time a blank line is acceptable is within
-the context of 
-.Sq \&Bd \-literal
-or
-.Sq \&Bd \-unfilled .
-.Pp
-Tab characters 
-.Pq \et
-are only acceptable when delimiting 
-.Sq \&Bl \-column 
-and in
-.Sq \&Bd \-literal
-or
-.Sq \&Bd \-unfilled
-contexts.
-.\" SUB-SECTION
+.\" SUB-SECTION----------------------
+.Ss Comments
+Text following a
+.Sq \e" ,
+whether in a macro or free-form text line, is ignored to the end of
+line.  A macro line with only a control character and comment escape,
+.Sq \&.\e" ,
+is also ignored.
+.\" SUB-SECTION----------------------

 .Ss Reserved Characters
 Within a macro line, the following characters are reserved:
 .Ss Reserved Characters
 Within a macro line, the following characters are reserved:

-.Bl -tag -width 12n -offset XXXX -compact
+.Bl -tag -width Ds -offset indent -compact

 .It \&.
 .Pq period
 .It \&,
 .It \&.
 .Pq period
 .It \&,


@@ -103,600 +88,150 @@ Within a macro line, the following characters are reserved:
 .Pq question
 .It \&!
 .Pq exclamation 
 .Pq question
 .It \&!
 .Pq exclamation 

+.It \&|
+.Pq vertical bar 

 .El
 .El

-.\" PARAGRAPH
+.\" PARAGRAPH------------

 .Pp
 Use of reserved characters is described in
 .Pp
 Use of reserved characters is described in

-.Sx Closure .
-For general non-reserved use, characters must either be escaped with a
-non-breaking space
+.Sx MACRO SYNTAX .
+For general use in macro lines, these characters must either be escaped
+with a non-breaking space

 .Pq Sq \e&
 .Pq Sq \e&

-or, if applicable, an appropriate escape-sequence used.  
-.\" SUB-SECTION
+or, if applicable, an appropriate escape sequence used.  
+.\" SUB-SECTION----------------------

 .Ss Special Characters
 .Ss Special Characters

-Special character sequences begin with the escape character
-.Sq \\
+Special characters may occur in both macro and free-form lines.
+Sequences begin with the escape character
+.Sq \e

 followed by either an open-parenthesis 
 .Sq \&(
 for two-character sequences; an open-bracket
 .Sq \&[
 for n-character sequences (terminated at a close-bracket
 .Sq \&] ) ;
 followed by either an open-parenthesis 
 .Sq \&(
 for two-character sequences; an open-bracket
 .Sq \&[
 for n-character sequences (terminated at a close-bracket
 .Sq \&] ) ;

-or a single one-character sequence.
-.Pp
-Characters may alternatively be escaped by a slash-asterisk,
-.Sq \\* ,
-with the same combinations as described above.  This form is deprecated.  
-.Pp
-The following is a table of all available escapes.
-.Pp
-Grammatic:
-.Bl -tag -width 12n -offset "XXXX" -compact
-.It \\(em
-.Pq em-dash
-.It \\(en
-.Pq en-dash
-.It \e-
-.Pq hyphen
-.It \\\\
-.Pq back-slash
-.It \e'
-.Pq apostrophe
-.It \e`
-.Pq back-tick
-.It \\
-.Pq space
-.It \\.
-.Pq period
-.It \\(r!
-.Pq upside-down exclamation
-.It \\(r?
-.Pq upside-down question
-.El
-.\" PARAGRAPH
-.Pp
-Enclosures:
-.Bl -tag -width 12n -offset "XXXX" -compact
-.It \\(lh
-.Pq left hand
-.It \\(rh
-.Pq right hand
-.It \\(Fo
-.Pq left guillemet
-.It \\(Fc
-.Pq right guillemet
-.It \\(fo
-.Pq left guilsing
-.It \\(fc
-.Pq right guilsing
-.It \\(rC
-.Pq right brace
-.It \\(lC
-.Pq left brace
-.It \\(ra
-.Pq right angle
-.It \\(la
-.Pq left angle
-.It \\(rB
-.Pq right bracket
-.It \\(lB
-.Pq left bracket
-.It \\q
-.Pq double-quote
-.It \\(lq
-.Pq left double-quote
-.It \\(Lq
-.Pq left double-quote, deprecated
-.It \\(rq
-.Pq right double-quote
-.It \\(Rq
-.Pq right double-quote, deprecated
-.It \\(oq
-.Pq left single-quote
-.It \\(aq
-.Pq right single-quote
-.It \\(Bq
-.Pq right low double-quote
-.It \\(bq
-.Pq right low single-quote
-.El
-.\" PARAGRAPH
-.Pp
-Indicatives:
-.Bl -tag -width 12n -offset "XXXX" -compact
-.It \\(<-
-.Pq left arrow
-.It \\(->
-.Pq right arrow
-.It \\(ua
-.Pq up arrow
-.It \\(da
-.Pq down arrow
-.It \\(<>
-.Pq left-right arrow
-.It \\(lA
-.Pq left double-arrow
-.It \\(rA
-.Pq right double-arrow
-.It \\(uA
-.Pq up double-arrow
-.It \\(dA
-.Pq down double-arrow
-.It \\(hA
-.Pq left-right double-arrow
-.El
-.\" PARAGRAPH
-.Pp
-Mathematical:
-.Bl -tag -width 12n -offset "XXXX" -compact
-.It \\(es
-.Pq empty set
-.It \\(ca
-.Pq intersection
-.It \\(cu
-.Pq union
-.It \\(gr
-.Pq gradient
-.It \\(pd
-.Pq partial differential
-.It \\(ap
-.Pq similarity
-.It \\(=)
-.Pq proper superset
-.It \\((=
-.Pq proper subset
-.It \\(eq
-.Pq equals
-.It \\(di
-.Pq division
-.It \\(mu
-.Pq multiplication
-.It \\(pl
-.Pq addition
-.It \\(nm
-.Pq not element
-.It \\(mo
-.Pq element
-.It \\(Im
-.Pq imaginary
-.It \\(Re
-.Pq real
-.It \\(Ah
-.Pq aleph
-.It \\(te
-.Pq existential quantifier
-.It \\(fa
-.Pq universal quantifier
-.It \\(AN
-.Pq logical AND
-.It \\(OR
-.Pq logical OR
-.It \\(no
-.Pq logical NOT
-.It \\(st
-.Pq such that
-.It \\(tf
-.Pq therefore
-.It \\(~~
-.Pq approximate
-.It \\(~=
-.Pq approximately equals
-.It \\(=~
-.Pq congruent
-.It \\(Gt
-.Pq greater-than, deprecated
-.It \\(Lt
-.Pq less-than, deprecated
-.It \\(<=
-.Pq less-than-equal
-.It \\(Le
-.Pq less-than-equal, deprecated
-.It \\(>=
-.Pq greater-than-equal
-.It \\(Ge
-.Pq greater-than-equal
-.It \\(==
-.Pq equal
-.It \\(!=
-.Pq not equal
-.It \\(Ne
-.Pq not equal, deprecated
-.It \\(if
-.Pq infinity
-.It \\(If
-.Pq infinity, deprecated
-.It \\(na
-.Pq NaN , an extension
-.It \\(Na
-.Pq NaN, deprecated
-.It \\(+-
-.Pq plus-minus
-.It \\(Pm
-.Pq plus-minus, deprecated
-.It \\(**
-.Pq asterisk
-.El
-.\" PARAGRAPH
-.Pp
-Ligatures:
-.Bl -tag -width 12n -offset "XXXX" -compact
-.It \\(ss
-.Pq German eszett
-.It \\(AE
-.Pq upper-case AE
-.It \\(ae
-.Pq lower-case AE
-.It \\(OE
-.Pq upper-case OE
-.It \\(oe
-.Pq lower-case OE
-.It \\(ff
-.Pq ff ligature
-.It \\(fi
-.Pq fi ligature
-.It \\(fl
-.Pq fl ligature
-.It \\(Fi
-.Pq ffi ligature
-.It \\(Fl
-.Pq ffl ligature
-.El
-.\" PARAGRAPH
-.Pp
-Diacritics and letters:
-.Bl -tag -width 12n -offset "XXXX" -compact
-.It \\(ga
-.Pq grave accent
-.It \\(aa
-.Pq accute accent
-.It \\(a"
-.Pq umlaut accent
-.It \\(ad
-.Pq dieresis accent
-.It \\(a~
-.Pq tilde accent
-.It \\(a^
-.Pq circumflex accent
-.It \\(ac
-.Pq cedilla accent
-.It \\(ad
-.Pq dieresis accent
-.It \\(ah
-.Pq caron accent
-.It \\(ao
-.Pq ring accent
-.It \\(ho
-.Pq hook accent
-.It \\(ab
-.Pq breve accent
-.It \\(a-
-.Pq macron accent
-.It \\(-D
-.Pq upper-case eth
-.It \\(Sd
-.Pq lower-case eth
-.It \\(TP
-.Pq upper-case thorn
-.It \\(Tp
-.Pq lower-case thorn
-.It \\('A
-.Pq upper-case acute A
-.It \\('E
-.Pq upper-case acute E
-.It \\('I
-.Pq upper-case acute I
-.It \\('O
-.Pq upper-case acute O
-.It \\('U
-.Pq upper-case acute U
-.It \\('a
-.Pq lower-case acute a
-.It \\('e
-.Pq lower-case acute e
-.It \\('i
-.Pq lower-case acute i
-.It \\('o
-.Pq lower-case acute o
-.It \\('u
-.Pq lower-case acute u
-.It \\(`A
-.Pq upper-case grave A
-.It \\(`E
-.Pq upper-case grave E
-.It \\(`I
-.Pq upper-case grave I
-.It \\(`O
-.Pq upper-case grave O
-.It \\(`U
-.Pq upper-case grave U
-.It \\(`a
-.Pq lower-case grave a
-.It \\(`e
-.Pq lower-case grave e
-.It \\(`i
-.Pq lower-case grave i
-.It \\(`o
-.Pq lower-case grave o
-.It \\(`u
-.Pq lower-case grave u
-.It \\(~A
-.Pq upper-case tilde A
-.It \\(~N
-.Pq upper-case tilde N
-.It \\(~O
-.Pq upper-case tilde O
-.It \\(~a
-.Pq lower-case tilde a
-.It \\(~n
-.Pq lower-case tilde n
-.It \\(~o
-.Pq lower-case tilde o
-.It \\(:A
-.Pq upper-case dieresis A
-.It \\(:E
-.Pq upper-case dieresis E
-.It \\(:I
-.Pq upper-case dieresis I
-.It \\(:O
-.Pq upper-case dieresis O
-.It \\(:U
-.Pq upper-case dieresis U
-.It \\(:a
-.Pq lower-case dieresis a
-.It \\(:e
-.Pq lower-case dieresis e
-.It \\(:i
-.Pq lower-case dieresis i
-.It \\(:o
-.Pq lower-case dieresis o
-.It \\(:u
-.Pq lower-case dieresis u
-.It \\(:y
-.Pq lower-case dieresis y
-.It \\(^A
-.Pq upper-case circumflex A
-.It \\(^E
-.Pq upper-case circumflex E
-.It \\(^I
-.Pq upper-case circumflex I
-.It \\(^O
-.Pq upper-case circumflex O
-.It \\(^U
-.Pq upper-case circumflex U
-.It \\(^a
-.Pq lower-case circumflex a
-.It \\(^e
-.Pq lower-case circumflex e
-.It \\(^i
-.Pq lower-case circumflex i
-.It \\(^o
-.Pq lower-case circumflex o
-.It \\(^u
-.Pq lower-case circumflex u
-.It \\(,C
-.Pq upper-case cedilla C
-.It \\(,c
-.Pq lower-case cedilla c
-.It \\(/L
-.Pq upper-case stroke L
-.It \\(/l
-.Pq lower-case stroke l
-.It \\(/O
-.Pq upper-case stroke O
-.It \\(/o
-.Pq lower-case stroke o
-.It \\(oA
-.Pq upper-case ring A
-.It \\(oa
-.Pq lower-case ring a
-.El
-.\" PARAGRAPH
-.Pp
-Monetary:
-.Bl -tag -width 12n -offset "XXXX" -compact
-.It \\(Cs
-.Pq Scandinavian
-.It \\(Do
-.Pq dollar
-.It \\(Po
-.Pq pound
-.It \\(Ye
-.Pq yen
-.It \\(Fn
-.Pq florin
-.It \\(ct
-.Pq cent
-.El
-.\" PARAGRAPH
-.Pp
-Special symbols:
-.Bl -tag -width 12n -offset "XXXX" -compact
-.It \\(de
-.Pq degree
-.It \\(ps
-.Pq paragraph
-.It \\(sc
-.Pq section
-.It \\(dg
-.Pq dagger
-.It \\(dd
-.Pq double dagger
-.It \\(ci
-.Pq circle
-.It \\(ba
-.Pq bar
-.It \\(bb
-.Pq broken bar
-.It \\(Ba
-.Pq bar, deprecated
-.It \\(co
-.Pq copyright
-.It \\(rg
-.Pq registered
-.It \\(tm
-.Pq trademarked
-.It \\&
-.Pq non-breaking space
-.It \\e
-.Pq escape
-.It \\(Am
-.Pq ampersand, deprecated
-.El 
-.\" SECTION
-.Sh ONTOLOGY
-Macros are classified in an ontology described by their scope rules.
-Some macros are allowed to deviate from their classifications to
-preserve backward-compatibility with old macro combinations still found
-in the manual corpus.  These are specifically noted on a per-macro
-basis.
-.\" SUB-SECTION
-.Ss Scope
-.Bl -inset 
-.\" LIST-ITEM
-.It Em Block
-macros enclose other block macros, in-line macros or text, and
-may span multiple lines.
-.Bl -inset -offset XXXX
-.\" LIST-ITEM
-.It Em Full-block
-macros always span multiple lines.  They consist of zero or 
-more
-.Qq heads ,
-subsequent macros or text on the same line following invocation; an
-optional
-.Qq body ,
-which spans subsequent lines of text or macros; and an optional
-.Qq tail ,
-macros or text on the same line following closure.
-.\" LIST-ITEM
-.It Em Partial-block
-macros may span multiple lines.  They consists of a optional
-.Qq head ,
-text immediately following invocation; always a 
-.Qq body ,
-text or macros following the head on the same and subsequent lines; and
-optionally a
-.Qq tail ,
-text immediately following closure.
-.\" LIST-ITEM
-.It Em In-line
-macros may only enclose text and span at most a single line. 
-.El
-.El
-.\" SUB-SECTION
-.Ss Closure
-Closure of a macro's scope depends first on its classification, then
-on whether it's parsable.  In this table,
-.Sq BFE
-refers to block full-explicit and so on.
-.\" PARAGRAPH
-.Pp
-.Bl -tag -width 12n -offset XXXX -compact
-.It BPE , BFE
-corresponding explicit closure macro
-.It BFI
-end-of-file or a corresponding implicit closure macro
-.It BPI
-end-of-line (body may be closed by >0 space-separated
-.Sx Reserved Characters ,
-although block scope will still be open)
-.It INL
-end-of-line
-.El
-.\" PARAGRAPH
-.Pp
-If a macro (block or in-line) is parsable, it may also be closed out by
-one of the following scenarios (unless specifically noted otherwise):
-.\" PARAGRAPH
-.Pp
-.Bl -dash -offset XXXX -compact
-.It 
-a sequence of >0 space-separated
-.Sx Reserved Characters ,
-.It
-another macro,
-.It
-end-of-line, or
-.It
-completion of a set number of arguments.
-.El
-.\" PARAGRAPH
-.Pp
-If >0 space-separated
-.Sx Reserved Characters
-are followed by non-reserved characters, the behaviour differs per
-macro.  In general, scope of the macro is closed and re-opened:
-subsequent tokens are interpreted as if the scope had just been opened.
-In other circumstances, scope is simply closed out.
-.\" SECTION
-.Sh SYNTAX
-Macros are generally two and at times three characters in length.  The
-syntax of macro invocation depends on its classification.  
-.Qq \-arg
-refers to the macro arguments (which may contain zero or more values).
-In these illustrations, 
-.Sq \&.Yo
-opens the scope of a macro, and if specified,
-.Sq \&.Yc
-closes it out (closure may be implicit at end-of-line or end-of-file).
-.\" PARAGRAPH
-.Pp
-Block full-explicit (may contain head, body, tail).
-.Bd -literal -offset XXXX
-\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBhead...\(rB 
-\(lBbody...\(rB 
-\&.Yc \(lBtail...\(rB 
+or a single one-character sequence.  See
+.Xr mandoc_char 1
+for a complete list.  Examples include 
+.Sq \e(em 
+.Pq em-dash 
+and 
+.Sq \ee
+.Pq back-slash .
+.\" PARAGRAPH------------
+.Pp
+An alternative escape sequence is
+the slash-asterisk,
+.Sq \e* ,
+but this method is discouraged for compatibility reasons.
+.\" PARAGRAPH------------
+.Pp
+Terms may
+also be text-decorated using the
+.Sq \ef
+escape followed by an indicator: B (bold), I, (italic), or P and R
+(Roman, or reset).  This form is not recommended.
+.\" SUB-SECTION----------------------
+.Ss Whitespace
+In general, consecutive blocks of whitespace are pruned from input.
+These are later re-added, when applicable, by 
+.Xr mandoc 1 .
+.\" PARAGRAPH------------
+.Pp
+Blank lines are permitted within
+.Sq \&Bd \-literal
+or
+.Sq \&Bd \-unfilled
+contexts.  Tab characters are only acceptable when delimiting 
+.Sq \&Bl \-column
+and in
+.Sq \&Bd \-literal
+or
+.Sq \&Bd \-unfilled
+contexts.
+.\" SECTION---------------------------------------------
+.Sh MANUAL STRUCTURE
+Each
+.Nm
+document must begin with a document prologue, containing, in order, 
+.Sq \&Dd ,
+.Sq \&Dt ,
+and
+.Sq \&Os 
+(using this manual as an example):
+.Bd -literal -offset indent
+\&.Dd $\&Mdocdate$
+\&.Dt mdoc 7
+\&.Os
+\&.Sh NAME
+\&.Nm mdoc
+\&.Nd mdoc language reference

 .Ed
 .Ed

-.\" PARAGRAPH

 .Pp
 .Pp

-Block full-implicit (may contain zero or more heads, body, no tail).
-.Bd -literal -offset XXXX
-\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBhead... \(lBTa head...\(rB\(rB 
-\(lBbody...\(rB 
-\&.Yc
-.Ed
-.\" PARAGRAPH
+Following these, the document body must begin with the NAME section
+containing at least one 
+.Sq \&Nm
+followed by 
+.Sq \&Nd .
+.\" PARAGRAPH------------
+.Pp
+Subsequent SYNOPSIS and DESCRIPTION sections are strongly encouraged,
+but non-compulsory. 
+.\" SECTION---------------------------------------------
+.Sh MACRO SYNTAX
+Every line beginning with the control character 
+.Sq \.
+is processed for macros, two- or three-character semantic annotations.
+.\" PARAGRAPH------------
+.Pp
+The syntax of macro depends on its classification.  In this section,
+.Sq \-arg 
+refers to macro arguments, which may be followed by zero or more
+.Sq parm
+parameters;
+.Sq \&Yo
+opens the scope of a macro; and if specified,
+.Sq \&Yc
+closes it out.
+.\" PARAGRAPH------------

 .Pp
 .Pp

-Block partial-explicit (may contain head, multi-line body, tail).
-.Bd -literal -offset XXXX
-\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBhead...\(rB 
+The
+.Em Callable
+column indicates that the macro may be called subsequent to the initial
+line-macro.  The 
+.Qq Parsable
+column indicates whether the macro may be followed by further
+(ostensibly callable) macros.  The
+.Em Scope
+column, if applicable, describes closure rules.
+.\" SUB-SECTION----------------------
+.Ss Block full-explicit
+Multi-line scope closed by an explicit closing macro.  All macros
+contains bodies; only
+.Pq Sq \&Bf
+contains a head.
+.Bd -literal -offset indent
+\&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB 

 \(lBbody...\(rB 
 \(lBbody...\(rB 

-\&.Yc \(lBtail...\(rB 
-
-\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBhead...\(rB \
-\(lBbody...\(rB \&Yc \(lBtail...\(rB 
-.Ed
-.\" PARAGRAPH
-.Pp
-Block partial-implicit (no head, body, no tail).  Note that the body
-section may be followed by zero or more 
-.Sx Reserved Words .
-These are in the block scope, but not in the body scope.
-.Bd -literal -offset XXXX
-\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBbody...\(rB \(lBreserved...\(rB
+\&.Yc

 .Ed
 .Ed

-.\" PARAGRAPH
+.\" PARAGRAPH------------

 .Pp
 .Pp

-In-lines have \(>=0 scoped arguments.
-.Bd -literal -offset XXX
-\&.Yy \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB
-
-\&.Yy \(lB\-arg \(lBval...\(rB\(rB arg0 arg1 argN
-.Ed
-.\"
-.Sh MACROS
-This section contains a complete list of all 
-.Nm
-macros, arranged ontologically.  A 
-.Qq callable
-macro is may be invoked subsequent to the initial macro-line macro.  A
-.Qq parsable
-macro may be followed by further (ostensibly callable) macros.
-.\" SUB-SECTION
+.Bl -column -compact -offset indent "MacroX" "CallableX" "ParsableX" "closed by XXX"
+.It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope
+.It \&Bd     Ta    \&No     Ta    \&No     Ta    closed by \&Ed
+.It \&Bf     Ta    \&No     Ta    \&No     Ta    closed by \&Ef
+.It \&Bk     Ta    \&No     Ta    \&No     Ta    closed by \&Ek
+.It \&Bl     Ta    \&No     Ta    \&No     Ta    closed by \&El
+.It \&Ed     Ta    \&No     Ta    \&No     Ta    opened by \&Bd
+.It \&Ef     Ta    \&No     Ta    \&No     Ta    opened by \&Bf
+.It \&Ek     Ta    \&No     Ta    \&No     Ta    opened by \&Bk
+.It \&El     Ta    \&No     Ta    \&No     Ta    opened by \&Bl
+.El
+.\" SUB-SECTION----------------------

 .Ss Block full-implicit
 .Ss Block full-implicit

-The head of these macros follows invocation; the body is the content of
-subsequent lines prior to closure.  None of these macros have tails;
-some 
+Multi-line scope closed by end-of-file or implicitly by another macro.
+All macros have bodies; some 

 .Po
 .Sq \&It \-bullet , 
 .Sq \-hyphen , 
 .Po
 .Sq \&It \-bullet , 
 .Sq \-hyphen , 


@@ -704,316 +239,338 @@ some
 .Sq \-enum ,
 .Sq \-item 
 .Pc
 .Sq \-enum ,
 .Sq \-item 
 .Pc

-don't have heads.
-.Pp
-.Bl -column "MacroX" "CallableX" "ParsableX" "Closing" -compact -offset XXXX
-.It Em Macro Ta Em Callable Ta Em Parsable Ta Em Closing
-.It \&.Sh    Ta    \&No    Ta    \&No    Ta    \&.Sh
-.It \&.Ss    Ta    \&No    Ta    \&No    Ta    \&.Sh, \&.Ss
-.It \&.It    Ta    \&No    Ta    Yes     Ta    \&.It, \&.El
-.El
-.\" SUB-SECTION
-.Ss Block full-explicit
-None of these macros are callable or parsed.  The last column indicates
-the explicit scope rules.  All contains bodies, some may contain heads 
-.Pq So \&Bf Sc .
+don't have heads, while 
+.Sq \&It \-column
+may have multiple heads.
+.Bd -literal -offset indent
+\&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead... \(lBTa head...\(rB\(rB 
+\(lBbody...\(rB 
+.Ed
+.\" PARAGRAPH------------

 .Pp
 .Pp

-.Bl -column "MacroX" "CallableX" "ParsableX" "closed by XXX" -compact -offset XXXX
+.Bl -column -compact -offset indent "MacroX" "CallableX" "ParsableX" "closed by XXXXXXXXXXX"

 .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope
 .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope

-.It \&.Bd    Ta    \&No    Ta    \&No    Ta    closed by \&.Ed
-.It \&.Ed    Ta    \&No    Ta    \&No    Ta    opened by \&.Bd
-.It \&.Bl    Ta    \&No    Ta    \&No    Ta    closed by \&.El
-.It \&.El    Ta    \&No    Ta    \&No    Ta    opened by \&.Bl
-.It \&.Bf    Ta    \&No    Ta    \&No    Ta    closed by \&.Ef
-.It \&.Ef    Ta    \&No    Ta    \&No    Ta    opened by \&.Bf
-.It \&.Bk    Ta    \&No    Ta    \&No    Ta    closed by \&.Ek
-.It \&.Ek    Ta    \&No    Ta    \&No    Ta    opened by \&.Bk
-.El
-.\" SUB-SECTION
-.Ss Block partial-implicit
-All of these are callable and parsed for further macros.  Their scopes
-close at the invocation's end-of-line.
-.Pp
-.Bl -column "MacroX" "CallableX" "ParsableX" -compact -offset XXXX
-.It Em Macro Ta Em Callable Ta Em Parsable
-.It \&.Aq    Ta    Yes   Ta    Yes
-.It \&.Op    Ta    Yes   Ta    Yes
-.It \&.Bq    Ta    Yes   Ta    Yes
-.It \&.Dq    Ta    Yes   Ta    Yes
-.It \&.Pq    Ta    Yes   Ta    Yes
-.It \&.Qq    Ta    Yes   Ta    Yes
-.It \&.Sq    Ta    Yes   Ta    Yes
-.It \&.Brq   Ta    Yes   Ta    Yes
-.It \&.D1    Ta    \&No  Ta    \&Yes
-.It \&.Dl    Ta    \&No  Ta    Yes
-.It \&.Ql    Ta    Yes   Ta    Yes
+.It \&It     Ta    \&No     Ta    Yes      Ta    closed by \&It, \&El
+.It \&Nd     Ta    \&No     Ta    \&No     Ta    closed by \&Sh
+.It \&Sh     Ta    \&No     Ta    \&No     Ta    closed by \&Sh
+.It \&Ss     Ta    \&No     Ta    \&No     Ta    closed by \&Sh, \&Ss

 .El
 .El

-.\" PARAGRAPH
-.Pp
-The
-.Sq \&Op
-may be broken by \&Oc as in the following example:
-.Bd -literal -offset XXXX
-\&.Oo
-\&.Op Fl a Oc
-.Ed
-.Pp
-In the above example, the scope of
-.Sq \&Op
-is technically broken by 
-.Sq \&Oc ,
-however, due to the overwhelming existence of this sequence, it's
-allowed.
-.\" SUB-SECTION
+.\" SUB-SECTION----------------------

 .Ss Block partial-explicit
 .Ss Block partial-explicit

-Each of these contains at least a body and, in limited circumstances, a
-head 
+Like block full-explicit, but also with single-line scope.  Each
+has at least a body and, in limited circumstances, a head 

 .Pq So \&Fo Sc , So \&Eo Sc
 and/or tail 
 .Pq So \&Ec Sc .
 .Pq So \&Fo Sc , So \&Eo Sc
 and/or tail 
 .Pq So \&Ec Sc .

+.Bd -literal -offset indent
+\&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB 
+\(lBbody...\(rB 
+\&.Yc \(lBtail...\(rB 
+
+\&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB \
+\(lBbody...\(rB \&Yc \(lBtail...\(rB 
+.Ed
+.\" PARAGRAPH------------

 .Pp
 .Pp

-.Bl -column "MacroX" "CallableX" "ParsableX" "closed by XXXX" -compact -offset XXXX
+.Bl -column "MacroX" "CallableX" "ParsableX" "closed by XXXX" -compact -offset indent

 .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope
 .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope

-.It \&.Ao    Ta    Yes   Ta    Yes    Ta    closed by \&.Ac
-.It \&.Ac    Ta    Yes   Ta    Yes    Ta    opened by \&.Ao
-.It \&.Bc    Ta    Yes   Ta    Yes    Ta    closed by \&.Bo
-.It \&.Bo    Ta    Yes   Ta    Yes    Ta    opened by \&.Bc
-.It \&.Pc    Ta    Yes   Ta    Yes    Ta    closed by \&.Po
-.It \&.Po    Ta    Yes   Ta    Yes    Ta    opened by \&.Pc
-.It \&.Do    Ta    Yes   Ta    Yes    Ta    closed by \&.Dc
-.It \&.Dc    Ta    Yes   Ta    Yes    Ta    opened by \&.Do
-.It \&.Xo    Ta    Yes   Ta    Yes    Ta    closed by \&.Xc
-.It \&.Xc    Ta    Yes   Ta    Yes    Ta    opened by \&.Xo
-.It \&.Bro   Ta    Yes   Ta    Yes    Ta    closed by \&.Brc
-.It \&.Brc   Ta    Yes   Ta    Yes    Ta    opened by \&.Bro
-.It \&.Oc    Ta    Yes   Ta    Yes    Ta    closed by \&.Oo
-.It \&.Oo    Ta    Yes   Ta    Yes    Ta    opened by \&.Oc
-.It \&.So    Ta    Yes   Ta    Yes    Ta    closed by \&.Sc
-.It \&.Sc    Ta    Yes   Ta    Yes    Ta    opened by \&.So
-.It \&.Fc    Ta    Yes   Ta    Yes    Ta    opened by \&.Fo
-.It \&.Fo    Ta    \&No  Ta    \&No   Ta    closed by \&.Fc
-.It \&.Ec    Ta    Yes   Ta    Yes    Ta    opened by \&.Eo
-.It \&.Eo    Ta    Yes   Ta    Yes    Ta    closed by \&.Ec
-.It \&.Qc    Ta    Yes   Ta    Yes    Ta    opened by \&.Oo
-.It \&.Qo    Ta    Yes   Ta    Yes    Ta    closed by \&.Oc
-.It \&.Re    Ta    \&No  Ta    \&No   Ta    opened by \&.Rs
-.It \&.Rs    Ta    \&No  Ta    \&No   Ta    closed by \&.Re
+.It \&Ac     Ta    Yes      Ta    Yes      Ta    opened by \&Ao
+.It \&Ao     Ta    Yes      Ta    Yes      Ta    closed by \&Ac
+.It \&Bc     Ta    Yes      Ta    Yes      Ta    closed by \&Bo
+.It \&Bo     Ta    Yes      Ta    Yes      Ta    opened by \&Bc
+.It \&Brc    Ta    Yes      Ta    Yes      Ta    opened by \&Bro
+.It \&Bro    Ta    Yes      Ta    Yes      Ta    closed by \&Brc
+.It \&Dc     Ta    Yes      Ta    Yes      Ta    opened by \&Do
+.It \&Do     Ta    Yes      Ta    Yes      Ta    closed by \&Dc
+.It \&Ec     Ta    Yes      Ta    Yes      Ta    opened by \&Eo
+.It \&Eo     Ta    Yes      Ta    Yes      Ta    closed by \&Ec
+.It \&Fc     Ta    Yes      Ta    Yes      Ta    opened by \&Fo
+.It \&Fo     Ta    \&No     Ta    \&No     Ta    closed by \&Fc
+.It \&Oc     Ta    Yes      Ta    Yes      Ta    closed by \&Oo
+.It \&Oo     Ta    Yes      Ta    Yes      Ta    opened by \&Oc
+.It \&Pc     Ta    Yes      Ta    Yes      Ta    closed by \&Po
+.It \&Po     Ta    Yes      Ta    Yes      Ta    opened by \&Pc
+.It \&Qc     Ta    Yes      Ta    Yes      Ta    opened by \&Oo
+.It \&Qo     Ta    Yes      Ta    Yes      Ta    closed by \&Oc
+.It \&Re     Ta    \&No     Ta    \&No     Ta    opened by \&Rs
+.It \&Rs     Ta    \&No     Ta    \&No     Ta    closed by \&Re
+.It \&Sc     Ta    Yes      Ta    Yes      Ta    opened by \&So
+.It \&So     Ta    Yes      Ta    Yes      Ta    closed by \&Sc
+.It \&Xc     Ta    Yes      Ta    Yes      Ta    opened by \&Xo
+.It \&Xo     Ta    Yes      Ta    Yes      Ta    closed by \&Xc
+.El
+.\" SUB-SECTION----------------------
+.Ss Block partial-implicit
+Like block full-implicit, but with single-line scope closed by 
+.Sx Reserved Characters 
+or end of line.
+.Bd -literal -offset indent
+\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBbody...\(rB \(lBres...\(rB
+.Ed
+.\" PARAGRAPH------------
+.Pp
+.Bl -column "MacroX" "CallableX" "ParsableX" -compact -offset indent
+.It Em Macro Ta Em Callable Ta Em Parsable
+.It \&Aq     Ta    Yes      Ta    Yes
+.It \&Bq     Ta    Yes      Ta    Yes
+.It \&Brq    Ta    Yes      Ta    Yes
+.It \&D1     Ta    \&No     Ta    \&Yes
+.It \&Dl     Ta    \&No     Ta    Yes
+.It \&Dq     Ta    Yes      Ta    Yes
+.It \&Op     Ta    Yes      Ta    Yes
+.It \&Pq     Ta    Yes      Ta    Yes
+.It \&Ql     Ta    Yes      Ta    Yes
+.It \&Qq     Ta    Yes      Ta    Yes
+.It \&Sq     Ta    Yes      Ta    Yes

 .El
 .El

-.\" SUB-SECTION
-.Ss In-line 
-In-line macros have only text children.  If a number (or inequality) of
+.\" SUB-SECTION----------------------
+.Ss In-line
+Closed by 
+.Sx Reserved Characters ,
+end of line, fixed argument lengths, and/or subsequent macros.  In-line
+macros have only text children.  If a number (or inequality) of

 arguments is
 .Pq n , 
 then the macro accepts an arbitrary number of arguments.
 arguments is
 .Pq n , 
 then the macro accepts an arbitrary number of arguments.

+.Bd -literal -offset indent
+\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB \(lbres...\(rb
+
+\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB Yc...
+
+\&.Yo \(lB\-arg \(lBval...\(rB\(rB arg0 arg1 argN
+.Ed
+.\" PARAGRAPH------------

 .Pp
 .Pp

-.Bl -column "MacroX" "CallableX" "ParsableX" "Arguments" -compact -offset XXXX
+.Bl -column "MacroX" "CallableX" "ParsableX" "Arguments" -compact -offset indent

 .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Arguments
 .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Arguments

-.It \&.Dd    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.Dt    Ta    \&No  Ta    \&No    Ta    n
-.It \&.Os    Ta    \&No  Ta    \&No    Ta    n
-.It \&.Pp    Ta    \&No  Ta    \&No    Ta    0
-.It \&.Ad    Ta    Yes   Ta    Yes     Ta    n
-.It \&.An    Ta    \&No  Ta    Yes     Ta    n
-.It \&.Ar    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Cd    Ta    Yes   Ta    \&No    Ta    >0
-.It \&.Cm    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Dv    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Er    Ta    Yes   Ta    Yes     Ta    >0
-.It \&.Ev    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Ex    Ta    \&No  Ta    \&No    Ta    0
-.It \&.Fa    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Fd    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.Fl    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Fn    Ta    Yes   Ta    Yes     Ta    >0
-.It \&.Ft    Ta    \&No  Ta    Yes     Ta    n
-.It \&.Ic    Ta    Yes   Ta    Yes     Ta    >0
-.It \&.In    Ta    \&No  Ta    \&No    Ta    n
-.It \&.Li    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Nd    Ta    \&No  Ta    \&No    Ta    n
-.It \&.Nm    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Ot    Ta    \&No  Ta    \&No    Ta    n
-.It \&.Pa    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Rv    Ta    \&No  Ta    \&No    Ta    0
-.It \&.St    Ta    \&No  Ta    Yes     Ta    1
-.It \&.Va    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Vt    Ta    Yes   Ta    Yes     Ta    >0
-.It \&.Xr    Ta    Yes   Ta    Yes     Ta    >0, <3
-.It \&.%A    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.%B    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.%C    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.%D    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.%I    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.%J    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.%N    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.%O    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.%P    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.%R    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.%T    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.%V    Ta    \&No  Ta    \&No    Ta    >0
-.It \&.At    Ta    Yes   Ta    Yes     Ta    1
-.It \&.Bsx   Ta    Yes   Ta    Yes     Ta    n
-.It \&.Bx    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Db    Ta    \&No  Ta    \&No    Ta    1
-.It \&.Em    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Fx    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Ms    Ta    \&No  Ta    Yes     Ta    >0
-.It \&.No    Ta    Yes   Ta    Yes     Ta    0
-.It \&.Ns    Ta    Yes   Ta    Yes     Ta    0
-.It \&.Nx    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Ox    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Pf    Ta    \&No  Ta    Yes     Ta    1
-.It \&.Sm    Ta    \&No  Ta    \&No    Ta    1
-.It \&.Sx    Ta    Yes   Ta    Yes     Ta    >0
-.It \&.Sy    Ta    Yes   Ta    Yes     Ta    >0
-.It \&.Tn    Ta    Yes   Ta    Yes     Ta    >0
-.It \&.Ux    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Dx    Ta    Yes   Ta    Yes     Ta    n
-.It \&.Bt    Ta    \&No  Ta    \&No    Ta    0
-.It \&.Hf    Ta    \&No  Ta    \&No    Ta    n
-.It \&.Fr    Ta    \&No  Ta    \&No    Ta    n
-.It \&.Ud    Ta    \&No  Ta    \&No    Ta    0
-.It \&.Lb    Ta    \&No  Ta    \&No    Ta    1
-.It \&.Ap    Ta    Yes   Ta    Yes     Ta    0
-.It \&.Lp    Ta    \&No  Ta    \&No    Ta    0
-.It \&.Lk    Ta    \&No  Ta    Yes     Ta    >0
-.It \&.Mt    Ta    \&No  Ta    Yes     Ta    >0
-.It \&.Es    Ta    \&No  Ta    \&No    Ta    0
-.It \&.En    Ta    \&No  Ta    \&No    Ta    0
+.It \&%A     Ta    \&No     Ta    \&No     Ta    >0
+.It \&%B     Ta    \&No     Ta    \&No     Ta    >0
+.It \&%C     Ta    \&No     Ta    \&No     Ta    >0
+.It \&%D     Ta    \&No     Ta    \&No     Ta    >0
+.It \&%I     Ta    \&No     Ta    \&No     Ta    >0
+.It \&%J     Ta    \&No     Ta    \&No     Ta    >0
+.It \&%N     Ta    \&No     Ta    \&No     Ta    >0
+.It \&%O     Ta    \&No     Ta    \&No     Ta    >0
+.It \&%P     Ta    \&No     Ta    \&No     Ta    >0
+.It \&%R     Ta    \&No     Ta    \&No     Ta    >0
+.It \&%T     Ta    \&No     Ta    \&No     Ta    >0
+.It \&%V     Ta    \&No     Ta    \&No     Ta    >0
+.It \&Ad     Ta    Yes      Ta    Yes      Ta    n
+.It \&An     Ta    Yes      Ta    Yes      Ta    n
+.It \&Ap     Ta    Yes      Ta    Yes      Ta    0
+.It \&Ar     Ta    Yes      Ta    Yes      Ta    n
+.It \&At     Ta    Yes      Ta    Yes      Ta    1
+.It \&Bsx    Ta    Yes      Ta    Yes      Ta    n
+.It \&Bt     Ta    \&No     Ta    \&No     Ta    0
+.It \&Bx     Ta    Yes      Ta    Yes      Ta    n
+.It \&Cd     Ta    Yes      Ta    \&No     Ta    >0
+.It \&Cm     Ta    Yes      Ta    Yes      Ta    n
+.It \&Db     Ta    \&No     Ta    \&No     Ta    1
+.It \&Dd     Ta    \&No     Ta    \&No     Ta    >0
+.It \&Dt     Ta    \&No     Ta    \&No     Ta    n
+.It \&Dv     Ta    Yes      Ta    Yes      Ta    n
+.It \&Dx     Ta    Yes      Ta    Yes      Ta    n
+.It \&Em     Ta    Yes      Ta    Yes      Ta    >0
+.It \&En     Ta    \&No     Ta    \&No     Ta    0
+.It \&Er     Ta    Yes      Ta    Yes      Ta    >0
+.It \&Es     Ta    \&No     Ta    \&No     Ta    0
+.It \&Ev     Ta    Yes      Ta    Yes      Ta    n
+.It \&Ex     Ta    \&No     Ta    \&No     Ta    0
+.It \&Fa     Ta    Yes      Ta    Yes      Ta    n
+.It \&Fd     Ta    \&No     Ta    \&No     Ta    >0
+.It \&Fl     Ta    Yes      Ta    Yes      Ta    n
+.It \&Fn     Ta    Yes      Ta    Yes      Ta    >0
+.It \&Fr     Ta    \&No     Ta    \&No     Ta    n
+.It \&Ft     Ta    Yes      Ta    Yes      Ta    n
+.It \&Fx     Ta    Yes      Ta    Yes      Ta    n
+.It \&Hf     Ta    \&No     Ta    \&No     Ta    n
+.It \&Ic     Ta    Yes      Ta    Yes      Ta    >0
+.It \&In     Ta    \&No     Ta    \&No     Ta    n
+.It \&Lb     Ta    \&No     Ta    \&No     Ta    1
+.It \&Li     Ta    Yes      Ta    Yes      Ta    n
+.It \&Lk     Ta    Yes      Ta    Yes      Ta    n
+.It \&Lp     Ta    \&No     Ta    \&No     Ta    0
+.It \&Ms     Ta    Yes      Ta    Yes      Ta    >0
+.It \&Mt     Ta    Yes      Ta    Yes      Ta    >0
+.It \&Nm     Ta    Yes      Ta    Yes      Ta    n
+.It \&No     Ta    Yes      Ta    Yes      Ta    0
+.It \&Ns     Ta    Yes      Ta    Yes      Ta    0
+.It \&Nx     Ta    Yes      Ta    Yes      Ta    n
+.It \&Os     Ta    \&No     Ta    \&No     Ta    n
+.It \&Ot     Ta    \&No     Ta    \&No     Ta    n
+.It \&Ox     Ta    Yes      Ta    Yes      Ta    n
+.It \&Pa     Ta    Yes      Ta    Yes      Ta    n
+.It \&Pf     Ta    \&No     Ta    Yes      Ta    1
+.It \&Pp     Ta    \&No     Ta    \&No     Ta    0
+.It \&Rv     Ta    \&No     Ta    \&No     Ta    0
+.It \&Sm     Ta    \&No     Ta    \&No     Ta    1
+.It \&St     Ta    \&No     Ta    Yes      Ta    1
+.It \&Sx     Ta    Yes      Ta    Yes      Ta    >0
+.It \&Sy     Ta    Yes      Ta    Yes      Ta    >0
+.It \&Tn     Ta    Yes      Ta    Yes      Ta    >0
+.It \&Ud     Ta    \&No     Ta    \&No     Ta    0
+.It \&Ux     Ta    Yes      Ta    Yes      Ta    n
+.It \&Va     Ta    Yes      Ta    Yes      Ta    n
+.It \&Vt     Ta    Yes      Ta    Yes      Ta    >0
+.It \&Xr     Ta    Yes      Ta    Yes      Ta    >0, <3
+.It \&br     Ta    \&No     Ta    \&No     Ta    0

 .El
 .El

-.Pp
-The
-.Sq \&Ot ,
-.Sq \&Fr ,
-.Sq \&Es 
-and
-.Sq \&En ,
-macros are obsolete.
-.\" SECTION
+.\" SECTION---------------------------------------------

 .Sh COMPATIBILITY
 .Sh COMPATIBILITY

-The mdoc language was traditionally a 
-.Qq roff
-macro package; most existing manuals were written with mdoc syntax
-dictated by system-dependent roff installations.  This section documents
-compatibility with these systems.
+This section documents compatibility with other roff implementations, at
+this time limited to 
+.Xr groff 1 .
+The term 
+.Qq historic groff
+refers to those versions before the 
+.Pa doc.tmac
+file re-write 
+.Pq somewhere between 1.15 and 1.19 .
+.\" PARAGRAPH------------

 .Pp
 .Bl -dash -compact
 .\" LIST-ITEM
 .It
 .Pp
 .Bl -dash -compact
 .\" LIST-ITEM
 .It

-.Sq \&Fo
+Some character sequences in groff are not handled depending on escape
+style, e.g., 
+.Sq \e(ba

 and
 and

-.Sq \&St
-historically weren't always callable.  Both are now correctly callable.
+.Sq \e*(Ba
+may not be interchanged.  This is no longer the case: all character
+sequences resolve to the same symbol, regardless the escape style.

 .\" LIST-ITEM
 .It
 .\" LIST-ITEM
 .It

-.Sq \&It \-nested
-is assumed for all lists: any list may be nested and
+Blocks of whitespace are stripped from both macro and free-form text
+lines (except when in literal mode), while groff would retain whitespace
+in free-form text lines.
+.\" LIST-ITEM
+.It
+Historic groff has many un-callable macros.  Most of these (excluding
+some block-level macros) are now callable, conforming to the
+non-historic groff version.
+.\" LIST-ITEM
+.It
+The vertical bar 
+.Sq \(ba
+made historic groff
+.Qq go orbital
+but is a proper delimiter in this implementation.
+.\" LIST-ITEM
+.It
+.Sq \&.It \-nested
+is assumed for all lists (it wasn't in historic groff): any list may be
+nested and

 .Sq \-enum
 lists will restart the sequence only for the sub-list.
 .\" LIST-ITEM
 .It
 .Sq \-enum
 lists will restart the sequence only for the sub-list.
 .\" LIST-ITEM
 .It

-.Sq \&It \-column
-syntax where column widths may be preceeded by other arguments (instead
+.Sq \&.It \-column
+syntax where column widths may be preceded by other arguments (instead

 of proceeded) is not supported.
 .\" LIST-ITEM
 .It
 The 
 of proceeded) is not supported.
 .\" LIST-ITEM
 .It
 The 

-.Sq \&At
+.Sq \&.At

 macro only accepts a single parameter.
 .\" LIST-ITEM
 .It
 macro only accepts a single parameter.
 .\" LIST-ITEM
 .It

-The system-name macros (
-.Ns Sq \&At ,
-.Sq \&Bsx ,
-.Sq \&Bx ,
-.Sq \&Fx ,
-.Sq \&Nx ,
-.Sq \&Ox ,
-and
-.Sq \&Ux )
-are callable.
-.\" LIST-ITEM
-.It

 Some manuals use
 Some manuals use

-.Sq \&Li
+.Sq \&.Li

 incorrectly by following it with a reserved character and expecting the
 delimiter to render.  This is not supported.
 .\" LIST-ITEM
 .It
 incorrectly by following it with a reserved character and expecting the
 delimiter to render.  This is not supported.
 .\" LIST-ITEM
 .It

-.Sq \&Cd
-is callable.
+If an special-character control character is escaped
+.Sq \e\e ,
+it will obviously not render the subsequent sequence.  Even newer
+versions of groff seem to dither on this.
+.\" LIST-ITEM
+.It
+In groff, the 
+.Sq \&.Fo
+macro only produces the first parameter.  This is no longer the case.

 .El
 .El

-.\" SECTION
+.\" SECTION---------------------------------------------

 .Sh SEE ALSO
 .Sh SEE ALSO

-.Xr mdoctree 1 ,
-.Xr mdoclint 1 ,
-.Xr mdocterm 1 ,
-.Xr mdoc 3
-.\" SECTION
+.Xr mandoc 1 ,
+.Xr mandoc_char 7
+.\" SECTION---------------------------------------------

 .Sh AUTHORS
 The
 .Nm
 utility was written by 
 .Sh AUTHORS
 The
 .Nm
 utility was written by 

-.An Kristaps Dzonsons Aq kristaps@openbsd.org .
-.\" SECTION
+.An Kristaps Dzonsons Aq kristaps@kth.se .
+.\" SECTION---------------------------------------------

 .Sh CAVEATS
 .Sh CAVEATS

-There are several ambiguous parts of mdoc.
+There are many ambiguous parts of mdoc.
+.\" PARAGRAPH------------

 .Pp
 .Bl -dash -compact
 .\" LIST-ITEM
 .It
 .Pp
 .Bl -dash -compact
 .\" LIST-ITEM
 .It

-.Sq \&Fa
+.Sq \&.Fa

 should be 
 should be 

-.Sq \&Va
+.Sq \&.Va

 as function arguments are variables.
 .\" LIST-ITEM
 .It
 as function arguments are variables.
 .\" LIST-ITEM
 .It

-.Sq \&Ft
+.Sq \&.Ft

 should be
 should be

-.Sq \&Vt
+.Sq \&.Vt

 as function return types are still types.  Furthermore, the
 as function return types are still types.  Furthermore, the

-.Sq \&Ft
+.Sq \&.Ft

 should be removed and
 should be removed and

-.Sq \&Fo ,
+.Sq \&.Fo ,

 which ostensibly follows it, should follow the same convention as
 which ostensibly follows it, should follow the same convention as

-.Sq \&Va .
+.Sq \&.Va .

 .\" LIST-ITEM
 .It
 .\" LIST-ITEM
 .It

-.Sq \&Va
+.Sq \&.Va

 should formalise that only one or two arguments are acceptable: a
 should formalise that only one or two arguments are acceptable: a

-variable name and optional, preceeding type.
+variable name and optional, preceding type.

 .\" LIST-ITEM
 .It
 .\" LIST-ITEM
 .It

-.Sq \&Fd
+.Sq \&.Fd

 is ambiguous.  It's commonly used to indicate an include file in the
 synopsis section.  
 is ambiguous.  It's commonly used to indicate an include file in the
 synopsis section.  

-.Sq \&In
+.Sq \&.In

 should be used, instead.
 .\" LIST-ITEM
 .It
 Only the
 .Sq \-literal
 argument to
 should be used, instead.
 .\" LIST-ITEM
 .It
 Only the
 .Sq \-literal
 argument to

-.Sq \&Bd
+.Sq \&.Bd

 makes sense.  The remaining ones should be removed.
 .\" LIST-ITEM
 .It
 The 
 makes sense.  The remaining ones should be removed.
 .\" LIST-ITEM
 .It
 The 

-.Sq \&Xo
+.Sq \&.Xo

 and
 and

-.Sq \&Xc
+.Sq \&.Xc

 macros should be deprecated.
 .\" LIST-ITEM
 .It
 The
 macros should be deprecated.
 .\" LIST-ITEM
 .It
 The

-.Sq \&Dt
+.Sq \&.Dt

 macro lacks clarity.  It should be absolutely clear which title will
 render when formatting the manual page.
 .\" LIST-ITEM
 .It
 A
 macro lacks clarity.  It should be absolutely clear which title will
 render when formatting the manual page.
 .\" LIST-ITEM
 .It
 A

-.Sq \&Lx
+.Sq \&.Lx

 should be provided for Linux (\(`a la 
 should be provided for Linux (\(`a la 

-.Sq \&Ox ,
-.Sq \&Nx 
+.Sq \&.Ox ,
+.Sq \&.Nx 

 etc.).
 etc.).

+.\" LIST-ITEM
+.It
+There's no way to refer to references in
+.Sq \&.Rs/.Re
+blocks.
+.\" LIST-ITEM
+.It
+The \-split and \-nosplit arguments to 
+.Sq \&.An
+are inane.

 .El
 .El