===================================================================
RCS file: /cvs/mandoc/mdoc.7,v
retrieving revision 1.78
retrieving revision 1.92
diff -u -p -r1.78 -r1.92
--- mandoc/mdoc.7	2009/11/16 09:52:47	1.78
+++ mandoc/mdoc.7	2010/04/07 18:50:35	1.92
@@ -1,4 +1,4 @@
-.\"	$Id: mdoc.7,v 1.78 2009/11/16 09:52:47 kristaps Exp $
+.\"	$Id: mdoc.7,v 1.92 2010/04/07 18:50:35 kristaps Exp $
 .\"
 .\" Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: November 16 2009 $
+.Dd $Mdocdate: April 7 2010 $
 .Dt MDOC 7
 .Os
 .
@@ -132,7 +132,7 @@ and
 Terms may be text-decorated using the
 .Sq \ef
 escape followed by an indicator: B (bold), I, (italic), R (Roman), or P
-(revert to previous mode):  
+(revert to previous mode):
 .Pp
 .D1 \efBbold\efR \efIitalic\efP
 .Pp
@@ -170,19 +170,19 @@ for arbitrary-digit numerals:
 .D1 \es+(10much bigger\es-(10
 .D1 \es+'100'much much bigger\es-'100'
 .Pp
-Note these forms are 
+Note these forms are
 .Em not
-recommended for 
+recommended for
 .Nm ,
 which encourages semantic annotation.
 .
 .
 .Ss Predefined Strings
-Historically, 
+Historically,
 .Xr groff 1
-also defined a set of package-specific 
+also defined a set of package-specific
 .Dq predefined strings ,
-which, like 
+which, like
 .Sx Special Characters ,
 demark special output characters and strings by way of input codes.
 Predefined strings are escaped with the slash-asterisk,
@@ -343,7 +343,7 @@ and
 .Sx \&Os
 macros, is required for every document.
 .Pp
-The first section (sections are denoted by 
+The first section (sections are denoted by
 .Sx \&Sh )
 must be the NAME section, consisting of at least one
 .Sx \&Nm
@@ -419,6 +419,11 @@ The
 macro(s) must precede the
 .Sx \&Nd
 macro.
+.Pp
+See
+.Sx \&Nm
+and
+.Sx \&Nd .
 .
 .It Em LIBRARY
 The name of the library containing the documented material, which is
@@ -429,12 +434,11 @@ this is as follows:
 .Ed
 .Pp
 See
-.Sx \&Lb
-for details.
+.Sx \&Lb .
 .
 .It Em SYNOPSIS
 Documents the utility invocation syntax, function call syntax, or device
-configuration. 
+configuration.
 .Pp
 For the first, utilities (sections 1, 6, and 8), this is
 generally structured as follows:
@@ -465,11 +469,19 @@ And for the third, configurations (section 4):
 \&.Cd \*qit* at isa? port 0x4e\*q
 .Ed
 .Pp
-Manuals not in these sections generally don't need a 
+Manuals not in these sections generally don't need a
 .Em SYNOPSIS .
+.Pp
+See
+.Sx \&Op ,
+.Sx \&Cd ,
+.Sx \&Fn ,
+.Sx \&Ft ,
+and
+.Sx \&Vt .
 .
 .It Em DESCRIPTION
-This expands upon the brief, one-line description in 
+This expands upon the brief, one-line description in
 .Em NAME .
 It usually contains a break-down of the options (if documenting a
 command), such as:
@@ -480,6 +492,7 @@ The arguments are as follows:
 Print verbose information.
 \&.El
 .Ed
+.Pp
 Manuals not documenting a command won't include the above fragment.
 .
 .It Em IMPLEMENTATION NOTES
@@ -535,7 +548,8 @@ for manuals in sections 1, 6, and 8; however, this pra
 discouraged.
 .Pp
 See
-.Sx \&Bl No \-diag .
+.Sx \&Bl
+.Fl diag .
 .
 .It Em ERRORS
 Documents error handling in sections 2, 3, and 9.
@@ -669,7 +683,7 @@ All macros have bodies; some
 don't have heads; only one
 .Po
 .Sx \&It Fl column
-.Pc 
+.Pc
 has multiple heads.
 .Bd -literal -offset indent
 \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead... \(lBTa head...\(rB\(rB
@@ -756,7 +770,16 @@ or end of line.
 .It Sx \&Ql  Ta    Yes      Ta    Yes
 .It Sx \&Qq  Ta    Yes      Ta    Yes
 .It Sx \&Sq  Ta    Yes      Ta    Yes
+.It Sx \&Vt  Ta    Yes      Ta    Yes
 .El
+.Pp
+Note that the
+.Sx \&Vt
+macro is a
+.Sx Block partial-implicit
+only when invoked as the first macro
+in a SYNOPSIS section line, else it is
+.Sx In-line .
 .
 .
 .Ss In-line
@@ -837,7 +860,7 @@ then the macro accepts an arbitrary number of argument
 .It Sx \&Ot  Ta    \&No     Ta    \&No     Ta    n
 .It Sx \&Ox  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Pa  Ta    Yes      Ta    Yes      Ta    n
-.It Sx \&Pf  Ta    \&No     Ta    Yes      Ta    1
+.It Sx \&Pf  Ta    Yes      Ta    Yes      Ta    1
 .It Sx \&Pp  Ta    \&No     Ta    \&No     Ta    0
 .It Sx \&Rv  Ta    \&No     Ta    \&No     Ta    n
 .It Sx \&Sm  Ta    \&No     Ta    \&No     Ta    1
@@ -849,10 +872,10 @@ then the macro accepts an arbitrary number of argument
 .It Sx \&Ux  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Va  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Vt  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Xr  Ta    Yes      Ta    Yes      Ta    >0, <3
+.It Sx \&Xr  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&br  Ta    \&No     Ta    \&No     Ta    0
 .It Sx \&sp  Ta    \&No     Ta    \&No     Ta    1
-.El   
+.El
 .
 .
 .Sh REFERENCE
@@ -951,10 +974,8 @@ Address construct: usually in the context of an comput
 memory, not a physical (post) address.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Ad [0,$]
-\&.Ad 0x00000000
-.Ed
+.D1 \&.Ad [0,$]
+.D1 \&.Ad 0x00000000
 .
 .Ss \&An
 Author name.  This macro may alternatively accepts the following
@@ -975,11 +996,8 @@ will cause the first listing also to be split.  If not
 section, the default is not to split.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.An -nosplit
-\&.An J. E. Hopcraft ,
-\&.An J. D. Ullman .
-.Ed
+.D1 \&.An -nosplit
+.D1 \&.An J. D. Ullman .
 .Pp
 .Em Remarks :
 the effects of
@@ -996,9 +1014,7 @@ Begins a block enclosed by angled brackets.  Does not 
 arguments.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Fl -key= Ns Ao Ar val Ac
-.Ed
+.D1 \&.Fl -key= \&Ns \&Ao \&Ar val \&Ac
 .Pp
 See also
 .Sx \&Aq .
@@ -1012,12 +1028,10 @@ a function:
 .Ed
 .
 .Ss \&Aq
-Encloses its arguments in angled brackets.  
+Encloses its arguments in angled brackets.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Fl -key= Ns Aq Ar val
-.Ed
+.D1 \&.Fl -key= \&Ns \&Aq \&Ar val
 .Pp
 .Em Remarks :
 this macro is often abused for rendering URIs, which should instead use
@@ -1038,11 +1052,9 @@ Command arguments.  If an argument is not provided, th
 is used as a default.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Fl o Ns Ar file1
-\&.Ar
-\&.Ar arg1 , arg2 .
-.Ed
+.D1 \&.Fl o \&Ns \&Ar file1
+.D1 \&.Ar
+.D1 \&.Ar arg1 , arg2 .
 .
 .Ss \&At
 Formats an AT&T version.  Accepts at most one parameter:
@@ -1058,10 +1070,8 @@ A system version of
 Note that these parameters do not begin with a hyphen.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.At 
-\&.At V.1
-.Ed
+.D1 \&.At
+.D1 \&.At V.1
 .Pp
 See also
 .Sx \&Bsx ,
@@ -1160,7 +1170,60 @@ and
 .Ss \&Bf
 .Ss \&Bk
 .Ss \&Bl
-.
+.\" Begins a list composed of one or more list entries.  A list entry is
+.\" specified by the
+.\" .Sx \&It
+.\" macro, which consists of a head and optional body.  By default, a list
+.\" is preceded by a blank line.  A list must specify one of the following
+.\" list types:
+.\" .Bl -tag -width 12n
+.\" .It Fl bullet
+.\" A list offset by a bullet.  The head of list entries must be empty.
+.\" List entry bodies are justified after the bullet.
+.\" .It Fl column
+.\" A columnated list.  The number of columns is specified as arguments to
+.\" the
+.\" .Sx \&Bl
+.\" macro (the deprecated form of following the invocation of
+.\" .Fl column
+.\" is also accepted).  Arguments dictate the width of columns specified in
+.\" list entries.  List entry bodies must be left empty.  Columns specified
+.\" in the list entry head are justified to their position in the sequence
+.\" of columns.
+.\" .It Fl dash
+.\" A list offset by a dash (hyphen).  The head of list entries must be
+.\" empty.  List entry bodies are justified past the dash.
+.\" .It Fl diag
+.\" Like
+.\" .Fl inset
+.\" lists, but with additional formatting to the head.
+.\" .It Fl enum
+.\" A list offset by a number indicating list entry position.  The head of
+.\" list entries must be empty.  List entry bodies are justified past the
+.\" enumeration.
+.\" .It Fl hang
+.\" Like
+.\" .Fl tag ,
+.\" but instead of list bodies justifying to the head on the first line,
+.\" they trail the head text.
+.\" .It Fl hyphen
+.\" Synonym for
+.\" .Fl dash .
+.\" .It Fl inset
+.\" Like
+.\" .Fl tag ,
+.\" but list entry bodies aren't justified.
+.\" .It Fl item
+.\" An un-justified list.  This produces blocks of text.
+.\" .It Fl ohang
+.\" List bodies are placed on the line following the head.
+.\" .It Fl tag
+.\" A list offset by list entry heads.  List entry bodies are justified
+.\" after the head.
+.\" .El
+.\" .Pp
+.\" More...
+.\" .
 .Ss \&Bo
 Begins a block enclosed by square brackets.  Does not have any head
 arguments.
@@ -1168,19 +1231,17 @@ arguments.
 Examples:
 .Bd -literal -offset indent
 \&.Bo 1 ,
-\&.Dv BUFSIZ Bc
+\&.Dv BUFSIZ \&Bc
 .Ed
 .Pp
 See also
 .Sx \&Bq .
 .
 .Ss \&Bq
-Encloses its arguments in square brackets.  
+Encloses its arguments in square brackets.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Bq 1 , Dv BUFSIZ
-.Ed
+.D1 \&.Bq 1 , \&Dv BUFSIZ
 .Pp
 .Em Remarks :
 this macro is sometimes abused to emulate optional arguments for
@@ -1205,7 +1266,7 @@ arguments.
 Examples:
 .Bd -literal -offset indent
 \&.Bro 1 , ... ,
-\&.Va n Brc
+\&.Va n \&Brc
 .Ed
 .Pp
 See also
@@ -1215,9 +1276,7 @@ See also
 Encloses its arguments in curly braces.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Brq 1 , ... , Va n
-.Ed
+.D1 \&.Brq 1 , ... , \&Va n
 .Pp
 See also
 .Sx \&Bro .
@@ -1227,10 +1286,8 @@ Format the BSD/OS version provided as an argument, or 
 no argument is provided.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Bsx 1.0
-\&.Bsx
-.Ed
+.D1 \&.Bsx 1.0
+.D1 \&.Bsx
 .Pp
 See also
 .Sx \&At ,
@@ -1251,10 +1308,8 @@ Format the BSD version provided as an argument, or a d
 argument is provided.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Bx 4.4
-\&.Bx
-.Ed
+.D1 \&.Bx 4.4
+.D1 \&.Bx
 .Pp
 See also
 .Sx \&At ,
@@ -1267,14 +1322,12 @@ and
 .Sx \&Ux .
 .
 .Ss \&Cd
-Configuration declaration (suggested for use only in section four
+Configuration declaration (suggested for use in section four and nine
 manuals).  This denotes strings accepted by
 .Xr config 8 .
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Cd device le0 at scode?
-.Ed
+.D1 \&.Cd device le0 at scode?
 .Pp
 .Em Remarks :
 this macro is commonly abused by using quoted literals to retain
@@ -1287,10 +1340,8 @@ Command modifiers.  Useful when specifying configurati
 keys.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Cm ControlPath
-\&.Cm ControlMaster
-.Ed
+.D1 \&.Cm ControlPath
+.D1 \&.Cm ControlMaster
 .Pp
 See also
 .Sx \&Fl .
@@ -1300,9 +1351,7 @@ One-line indented display.  This is formatted by the d
 is useful for simple indented statements.  It is followed by a newline.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.D1 Fl abcdefgh
-.Ed
+.D1 \&.D1 \&Fl abcdefgh
 .Pp
 See also
 .Sx \&Bd
@@ -1322,7 +1371,7 @@ manual.  Its calling syntax is as follows:
 .Pp
 .D1 \. Ns Sx \&Dd Cm date
 .Pp
-The 
+The
 .Cm date
 field may be either
 .Ar $\&Mdocdate$ ,
@@ -1333,11 +1382,9 @@ or instead a valid canonical date as specified by
 If a date does not conform, the current date is used instead.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Dd $\&Mdocdate$
-\&.Dd $\&Mdocdate: July 21 2007$
-\&.Dd July 21, 2007
-.Ed
+.D1 \&.Dd $\&Mdocdate$
+.D1 \&.Dd $\&Mdocdate: July 21 2007$
+.D1 \&.Dd July 21, 2007
 .Pp
 See also
 .Sx \&Dt
@@ -1349,9 +1396,7 @@ One-line intended display.  This is formatted as liter
 useful for commands and invocations.  It is followed by a newline.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Dl % mandoc mdoc.7 | less
-.Ed
+.D1 \&.Dl % mandoc mdoc.7 | less
 .Pp
 See also
 .Sx \&Bd
@@ -1363,18 +1408,16 @@ Begins a block enclosed by double quotes.  Does not ha
 arguments.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.D1 Do April is the cruellest month Dc \e(em T.S. Eliot
-.Ed
+.D1 \&.D1 \&Do April is the cruellest month \&Dc \e(em T.S. Eliot
 .Pp
 See also
 .Sx \&Dq .
 .
 .Ss \&Dq
-Encloses its arguments in double quotes.  
+Encloses its arguments in double quotes.
 .Pp
 Examples:
-.Bd -literal -offset indent
+.Bd -literal -offset indent -compact
 \&.Dq April is the cruellest month
 \e(em T.S. Eliot
 .Ed
@@ -1477,6 +1520,7 @@ subsequent that.  It, too, is optional.  It must be on
 .Ar hppa64 ,
 .Ar i386 ,
 .Ar landisk ,
+.Ar loongson ,
 .Ar luna88k ,
 .Ar mac68k ,
 .Ar macppc ,
@@ -1495,12 +1539,10 @@ or
 .El
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Dt FOO 1
-\&.Dt FOO 4 KM
-\&.Dt FOO 9 i386
-\&.Dt FOO 9 KM i386
-.Ed
+.D1 \&.Dt FOO 1
+.D1 \&.Dt FOO 4 KM
+.D1 \&.Dt FOO 9 i386
+.D1 \&.Dt FOO 9 KM i386
 .Pp
 See also
 .Sx \&Dd
@@ -1511,10 +1553,8 @@ and
 Defined variables such as preprocessor constants.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Dv BUFSIZ
-\&.Dv STDOUT_FILENO
-.Ed
+.D1 \&.Dv BUFSIZ
+.D1 \&.Dv STDOUT_FILENO
 .Pp
 See also
 .Sx \&Er .
@@ -1524,10 +1564,8 @@ Format the DragonFly BSD version provided as an argume
 value if no argument is provided.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Dx 2.4.1
-\&.Dx
-.Ed
+.D1 \&.Dx 2.4.1
+.D1 \&.Dx
 .Pp
 See also
 .Sx \&At ,
@@ -1544,27 +1582,24 @@ and
 .Ss \&Ef
 .Ss \&Ek
 .Ss \&El
+.
 .Ss \&Em
 Denotes text that should be emphasised.  Note that this is a
 presentation term and should not be used for stylistically decorating
 technical terms.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Ed Warnings!
-\&.Ed Remarks :
-.Ed
+.D1 \&.Em Warnings!
+.D1 \&.Em Remarks :
 .
 .Ss \&En
 .Ss \&Eo
 .Ss \&Er
-Error constants (suggested for use only in section two manuals).
+Display error constants.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Er EPERM
-\&.Er ENOENT
-.Ed
+.D1 \&.Er EPERM
+.D1 \&.Er ENOENT
 .Pp
 See also
 .Sx \&Dv .
@@ -1576,10 +1611,8 @@ Environmental variables such as those specified in
 .Xr environ 7 .
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Ev DISPLAY
-\&.Ev PATH
-.Ed
+.D1 \&.Ev DISPLAY
+.D1 \&.Ev PATH
 .
 .Ss \&Ex
 Inserts text regarding a utility's exit values.  This macro must have
@@ -1596,6 +1629,22 @@ is provided.
 .Ss \&Fc
 .Ss \&Fd
 .Ss \&Fl
+Command-line flag.  Used when listing arguments to command-line
+utilities.  Prints a fixed-width hyphen
+.Sq \-
+directly followed by each argument.  If no arguments are provided, a hyphen is
+printed followed by a space.  If the argument is a macro, a hyphen is
+prefixed to the subsequent macro output.
+.Pp
+Examples:
+.D1 \&.Fl a b c
+.D1 \&.Fl \&Pf a b
+.D1 \&.Fl
+.D1 \&.Op \&Fl o \&Ns \&Ar file
+.Pp
+See also
+.Sx \&Cm .
+.
 .Ss \&Fn
 .Ss \&Fo
 .Ss \&Fr
@@ -1605,10 +1654,8 @@ Format the FreeBSD version provided as an argument, or
 if no argument is provided.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Fx 7.1
-\&.Fx
-.Ed
+.D1 \&.Fx 7.1
+.D1 \&.Fx
 .Pp
 See also
 .Sx \&At ,
@@ -1632,10 +1679,8 @@ Format a hyperlink.  The calling syntax is as follows:
 .D1 \. Ns Sx \&Lk Cm uri Op Cm name
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Lk http://bsd.lv "The BSD.lv Project"
-\&.Lk http://bsd.lv
-.Ed
+.D1 \&.Lk http://bsd.lv "The BSD.lv Project"
+.D1 \&.Lk http://bsd.lv
 .Pp
 See also
 .Sx \&Mt .
@@ -1652,10 +1697,8 @@ Format the NetBSD version provided as an argument, or 
 no argument is provided.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Nx 5.01
-\&.Nx
-.Ed
+.D1 \&.Nx 5.01
+.D1 \&.Nx
 .Pp
 See also
 .Sx \&At ,
@@ -1685,11 +1728,9 @@ unspecified, it defaults to the local operating system
 the suggested form.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Os
-\&.Os KTH/CSC/TCS
-\&.Os BSD 4.3
-.Ed
+.D1 \&.Os
+.D1 \&.Os KTH/CSC/TCS
+.D1 \&.Os BSD 4.3
 .Pp
 See also
 .Sx \&Dd
@@ -1707,10 +1748,8 @@ Format the OpenBSD version provided as an argument, or
 if no argument is provided.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Ox 4.5
-\&.Ox
-.Ed
+.D1 \&.Ox 4.5
+.D1 \&.Ox
 .Pp
 See also
 .Sx \&At ,
@@ -1760,7 +1799,7 @@ and
 child macros (at least one must be specified).
 .Pp
 Examples:
-.Bd -literal -offset indent
+.Bd -literal -offset indent -compact
 \&.Rs
 \&.%A J. E. Hopcroft
 \&.%A J. D. Ullman
@@ -1793,9 +1832,7 @@ line.
 Format the UNIX name.  Accepts no argument.
 .Pp
 Examples:
-.Bd -literal -offset indent
-\&.Ux
-.Ed
+.D1 \&.Ux
 .Pp
 See also
 .Sx \&At ,
@@ -1809,9 +1846,61 @@ and
 .
 .Ss \&Va
 .Ss \&Vt
+A variable type.  This is also used for indicating global variables in the
+SYNOPSIS section, in which case a variable name is also specified.  Note that
+it accepts
+.Sx Block partial-implicit
+syntax when invoked as the first macro in the SYNOPSIS section, else it
+accepts ordinary
+.Sx In-line
+syntax.
+.Pp
+Note that this should not be confused with
+.Sx \&Ft ,
+which is used for function return types.
+.Pp
+Examples:
+.D1 \&.Vt unsigned char
+.D1 \&.Vt extern const char * const sys_signame[] ;
+.Pp
+See also
+.Sx \&Ft
+and
+.Sx \&Va .
+.
 .Ss \&Xc
+Close a scope opened by
+.Sx \&Xo .
+.
 .Ss \&Xo
+Open an extension scope.  This macro originally existed to extend the
+9-argument limit of troff; since this limit has been lifted, the macro
+has been deprecated.
+.
 .Ss \&Xr
+Link to another manual
+.Pq Qq cross-reference .
+Its calling syntax is
+.Pp
+.D1 \. Ns Sx \&Xr Cm name section
+.Pp
+The
+.Cm name
+and
+.Cm section
+are the name and section of the linked manual.  If
+.Cm section
+is followed by non-punctuation, an
+.Sx \&Ns
+is inserted into the token stream.  This behaviour is for compatibility
+with
+.Xr groff 1 .
+.Pp
+Examples:
+.D1 \&.Xr mandoc 1
+.D1 \&.Xr mandoc 1 ;
+.D1 \&.Xr mandoc 1 \&Ns s behaviour
+.
 .Ss \&br
 .Ss \&sp
 .
@@ -1830,7 +1919,24 @@ file re-write
 .Pp
 .Bl -dash -compact
 .It
+The comment syntax
+.Sq \e."
+is no longer accepted.
+.It
+In
+.Xr groff 1 ,
+the
+.Sx \&Pa
+macro does not format its arguments when used in the FILES section under
+certain list types.  This irregular behaviour has been discontinued.
+.It
+Historic
 .Xr groff 1
+does not print a dash for empty
+.Sx \&Fl
+arguments.  This behaviour has been discontinued.
+.It
+.Xr groff 1
 behaves strangely (even between versions) when specifying
 .Sq \ef
 escapes within line-macro scopes.  These aberrations have been
@@ -1839,7 +1945,7 @@ normalised.
 Negative scaling units are now truncated to zero instead of creating
 interesting conditions, such as with
 .Sx \&sp
-.Cm \-1i .
+.Fl 1i .
 Furthermore, the
 .Sq f
 scaling unit, while accepted, is rendered as the default unit.