Imported Upstream version 1.6.40

[platform/upstream/libpng.git] / libpng.3

diff --git a/libpng.3 b/libpng.3
index f374235..003bfaf 100644 (file)
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "April 14, 2019"
+.TH LIBPNG 3 "June 21, 2023"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.37
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.40
 
 .SH SYNOPSIS
 \fB#include <png.h>\fP
@@ -519,7 +519,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- Copyright (c) 2018-2019 Cosmin Truta
+ Copyright (c) 2018-2023 Cosmin Truta
  Copyright (c) 1998-2018 Glenn Randers-Pehrson
 
  This document is released under the libpng license.
@@ -528,9 +528,9 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng version 1.6.36, December 2018, through 1.6.37 - April 2019
+ libpng version 1.6.36, December 2018, through 1.6.40 - June 2023
  Updated and distributed by Cosmin Truta
- Copyright (c) 2018-2019 Cosmin Truta
+ Copyright (c) 2018-2023 Cosmin Truta
 
  libpng versions 0.97, January 1998, through 1.6.35 - July 2018
  Updated and distributed by Glenn Randers-Pehrson
@@ -1396,7 +1396,7 @@ described below (the latter being the two common names for associated alpha
 color channels). Note that PNG files always contain non-associated color
 channels; png_set_alpha_mode() with one of the modes causes the decoder to
 convert the pixels to an associated form before returning them to your
-application. 
+application.
 
 Since it is not necessary to perform arithmetic on opaque color values so
 long as they are not to be resampled and are in the final color space it is
@@ -2311,7 +2311,7 @@ the information.  If, instead, you want to convert the image to an opaque
 version with no alpha channel use png_set_background; see below.
 
 As of libpng version 1.5.2, almost all useful expansions are supported, the
-major ommissions are conversion of grayscale to indexed images (which can be
+major omissions are conversion of grayscale to indexed images (which can be
 done trivially in the application) and conversion of indexed to grayscale (which
 can be done by a trivial manipulation of the palette.)
 
@@ -5995,35 +5995,25 @@ letter, until version 1.0.6j; from then on they were given the upcoming
 public release number plus "betaNN" or "rcNN".
 
 .SH "SEE ALSO"
-.IR libpngpf(3) ", " png(5)
-.LP
-.IR libpng :
+.BR "png"(5)
 .IP
-https://libpng.sourceforge.io/ (follow the [DOWNLOAD] link)
-http://www.libpng.org/pub/png
-
+The PNG (Portable Network Graphics) format specification.
 .LP
-.IR zlib :
+.B libpng
 .IP
-(generally) at the same location as
-.I libpng
-or at
+http://www.libpng.org/pub/png/libpng.html (canonical home page)
 .br
-https://zlib.net/
-
+https://github.com/pnggroup/libpng (canonical Git repository)
+.br
+https://libpng.sourceforge.io (downloadable archives)
 .LP
-.IR PNG specification: RFC 2083
+.B zlib
 .IP
-(generally) at the same location as
-.I libpng
-or at
+https://zlib.net (canonical home page)
 .br
-https://www.ietf.org/rfc/rfc2083.txt
+https://github.com/madler/zlib (canonical Git repository)
 .br
-or (as a W3C Recommendation) at
-.br
-https://www.w3.org/TR/REC-png.html
-
+A copy of zlib may also be found at the same location as libpng.
 .LP
 In the case of any inconsistency between the PNG specification
 and this library, the specification takes precedence.
@@ -6043,10 +6033,10 @@ Libpng:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Maintained by Cosmin Truta.
 
-Supported by the PNG development group
+Supported by the PNG development group.
 .br
-png-mng-implement at lists.sourceforge.net (subscription required; visit
-https://lists.sourceforge.net/lists/listinfo/png-mng-implement
-to subscribe).
+png-mng-implement at lists.sourceforge.net. (Subscription is required;
+visit https://lists.sourceforge.net/lists/listinfo/png-mng-implement
+to subscribe.)
 
 .\" end of man page