From a6ec2b5f194fc4edcf43cfcb2833d28379a9e371 Mon Sep 17 00:00:00 2001 From: Ingo Schwarze Date: Tue, 18 Feb 2020 17:31:28 +0000 Subject: Mention that .AT, .P, .SB, and .UC are extensions; it really matters because we only retain the language for backward compatibility in the first place. Part of the research done by , see the list for details. No change to the following conventions: Consider portable whatever made it into GNU troff no later than 4.4BSD. For portable extensions, mention their origin at the end of the description. For non-portable extensions, for example from man-ext, usually warn earlier, near the beginning of the description. --- man.7 | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) (limited to 'man.7') diff --git a/man.7 b/man.7 index 6b4bece7..81e3fd7d 100644 --- a/man.7 +++ b/man.7 @@ -1,7 +1,7 @@ -.\" $Id: man.7,v 1.144 2019/07/09 03:46:59 schwarze Exp $ +.\" $Id: man.7,v 1.145 2020/02/18 17:31:28 schwarze Exp $ .\" .\" Copyright (c) 2009, 2010, 2011, 2012 Kristaps Dzonsons -.\" Copyright (c) 2011-2015,2017,2018,2019 Ingo Schwarze +.\" Copyright (c) 2011-2015, 2017-2020 Ingo Schwarze .\" Copyright (c) 2017 Anthony Bentley .\" Copyright (c) 2010 Joerg Sonnenberger .\" @@ -17,7 +17,7 @@ .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. .\" -.Dd $Mdocdate: July 9 2019 $ +.Dd $Mdocdate: February 18 2020 $ .Dt MAN 7 .Os .Sh NAME @@ -127,6 +127,8 @@ Sets the volume for the footer for compatibility with man pages from .At releases. The optional arguments specify which release it is from. +This macro is an extension that first appeared in +.Bx 4.3 . .It Ic B Text is rendered in bold face. .It Ic BI @@ -255,8 +257,12 @@ is usually a command-line flag and .Ar value its argument. .It Ic P -A synonym for -.Ic PP . +This synonym for +.Ic PP +is an +.At III +extension later adopted by +.Bx 4.3 . .It Ic PD Specify the vertical space to be inserted before each new paragraph. .br @@ -343,6 +349,9 @@ See also .It Ic SB Text is rendered in small size (one point smaller than the default font) bold face. +This macro is an extension that probably first appeared in SunOS 4.0 +and was later adopted by GNU and by +.Bx 4.4 . .It Ic SH Begin a section. The scope of a section is only closed by another section or the end of @@ -435,6 +444,8 @@ Sets the volume for the footer for compatibility with man pages from .Bx releases. The optional first argument specifies which release it is from. +This macro is an extension that first appeared in +.Bx 3 . .It Ic UE End a uniform resource identifier block started with .Ic UR . -- cgit v1.2.3