mdocml: Shorten the description of .sp and move it to roff(7).

mdocml: Shorten the description of .sp and move it to roff(7).

[schwarze]

Log Message:
-----------
Shorten the description of .sp and move it to roff(7).
If is not a macro but a low-level roff request 
and not recommended for use in manual pages.

Modified Files:
--------------
    mdocml:
        man.7
        mdoc.7
        roff.7

Revision Data
-------------
Index: man.7
===================================================================
RCS file: /home/cvs/mdocml/mdocml/man.7,v
retrieving revision 1.133
retrieving revision 1.134
diff -Lman.7 -Lman.7 -u -p -r1.133 -r1.134
--- man.7
+++ man.7
@@ -266,7 +266,6 @@ in the alphabetical reference below.
 .It Sx TP Ta tagged paragraph: Op Ar width
 .It Sx HP Ta hanged paragraph: Op Ar width
 .It Sx PD Ta set vertical paragraph distance: Op Ar height
-.It Sx \&sp Ta force vertical space: Op Ar height
 .It Sx fi , nf Ta fill mode and no-fill mode (no arguments)
 .It Sx in Ta additional indent: Op Ar width
 .El
@@ -707,12 +706,6 @@ It has the following syntax:
 link description to be shown
 .Pf \. Sx UE
 .Ed
-.Ss \&br
-Breaks the current line.
-Consecutive invocations have no further effect.
-.Pp
-See also
-.Sx \&sp .
 .Ss \&fi
 End literal mode begun by
 .Sx \&nf .
@@ -735,22 +728,6 @@ Literal mode is implicitly ended by
 .Sx \&SH
 or
 .Sx \&SS .
-.Ss \&sp
-Insert vertical spaces into output with the following syntax:
-.Bd -filled -offset indent
-.Pf \. Sx \&sp
-.Op Ar height
-.Ed
-.Pp
-The
-.Ar height
-argument is a scaling width as described in
-.Xr roff 7 .
-If 0, this is equivalent to the
-.Xr roff 7
-.Ic \&br
-request.
-Defaults to 1, if unspecified.
 .Sh MACRO SYNTAX
 The
 .Nm
@@ -774,8 +751,7 @@ is equivalent to
 .Sq \&.I foo .
 If next-line macros are invoked consecutively, only the last is used.
 If a next-line macro is followed by a non-next-line macro, an error is
-raised, except for
-.Sx \&sp .
+raised.
 .Pp
 The syntax is as follows:
 .Bd -literal -offset indent
@@ -806,7 +782,6 @@ The syntax is as follows:
 .It Sx \&fi  Ta    0         Ta    current   Ta    compat
 .It Sx \&in  Ta    1         Ta    current   Ta    compat
 .It Sx \&nf  Ta    0         Ta    current   Ta    compat
-.It Sx \&sp  Ta    1         Ta    current   Ta    compat
 .El
 .Pp
 Macros marked as
Index: mdoc.7
===================================================================
RCS file: /home/cvs/mdocml/mdocml/mdoc.7,v
retrieving revision 1.263
retrieving revision 1.264
diff -Lmdoc.7 -Lmdoc.7 -u -p -r1.263 -r1.264
--- mdoc.7
+++ mdoc.7
@@ -476,7 +476,6 @@ in the alphabetical
 .It Sx \&Ap Ta apostrophe without surrounding whitespace (no arguments)
 .It Sx \&Sm Ta switch horizontal spacing mode: Op Cm on | off
 .It Sx \&Bk , \&Ek Ta keep block: Fl words
-.It Sx \&sp Ta force vertical space: Op Ar height
 .El
 .Ss Semantic markup for command line utilities:
 .Bl -column "Brq, Bro, Brc" description
@@ -2735,21 +2734,6 @@ Examples:
 .Dl \&.Xr mandoc 1
 .Dl \&.Xr mandoc 1 \&;
 .Dl \&.Xr mandoc 1 \&Ns s behaviour
-.Ss \&sp
-Emits vertical space.
-This macro should not be used; it is implemented for compatibility with
-historical manuals.
-Its syntax is as follows:
-.Pp
-.D1 Pf \. Sx \&sp Op Ar height
-.Pp
-The
-.Ar height
-argument is a scaling width as described in
-.Xr roff 7 .
-If unspecified,
-.Sx \&sp
-asserts a single vertical space.
 .Sh MACRO SYNTAX
 The syntax of a macro depends on its classification.
 In this section,
@@ -3034,7 +3018,6 @@ then the macro accepts an arbitrary numb
 .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    2
-.It Sx \&sp  Ta    \&No     Ta    \&No     Ta    1
 .El
 .Ss Delimiters
 When a macro argument consists of one single input character
Index: roff.7
===================================================================
RCS file: /home/cvs/mdocml/mdocml/roff.7,v
retrieving revision 1.77
retrieving revision 1.78
diff -Lroff.7 -Lroff.7 -u -p -r1.77 -r1.78
--- roff.7
+++ roff.7
@@ -1544,6 +1544,16 @@ is discouraged.
 Use
 .Xr ln 1
 instead.
+.Ss \&sp
+Break the output line and emit vertical space.
+Its syntax is as follows:
+.Pp
+.D1 Pf \. Cm \&sp Op Ar height
+.Pp
+The argument follows the syntax of
+.Sx Scaling Widths
+and defaults to one blank line
+.Pq Li 1v .
 .Ss \&spacewidth
 Set the space width from the font metrics file.
 This is a Heirloom extension and currently ignored.
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