diff --git a/INSTALL b/INSTALL
index 6e3e92651..8e42354f2 100644
--- a/INSTALL
+++ b/INSTALL
@@ -95,8 +95,8 @@ If you want to use "cmake" (see www.cmake.org), type
 V. Directory structure
 
 You can rename the directories that you downloaded (they
-might be called "libpng-x.y.z" or "libpngNN" and "zlib-1.2.7"
-or "zlib127") so that you have directories called "zlib" and "libpng".
+might be called "libpng-x.y.z" or "libpngNN" and "zlib-1.2.8"
+or "zlib128") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
 
@@ -283,15 +283,6 @@ new capabilities and to simplify their build system.
 
 A. Specific changes to library configuration capabilities
 
-The library now supports a complete fixed point implementation and can
-thus be used on systems that have no floating point support or very
-limited or slow support.  Previously gamma correction, an essential part
-of complete PNG support, required reasonably fast floating point.
-
-As part of this the choice of internal implementation has been made
-independent of the choice of fixed versus floating point APIs and all the
-missing fixed point APIs have been implemented.
-
 The exact mechanism used to control attributes of API functions has
 changed.  A single set of operating system independent macro definitions
 is used and operating system specific directives are defined in
diff --git a/libpng-manual.txt b/libpng-manual.txt
index f7e14b77b..05a9232e9 100644
--- a/libpng-manual.txt
+++ b/libpng-manual.txt
@@ -4894,6 +4894,18 @@ limits are now
 The png_set_option() function (and the "options" member of the png struct) was
 added to libpng-1.5.15.
 
+The library now supports a complete fixed point implementation and can
+thus be used on systems that have no floating point support or very
+limited or slow support.  Previously gamma correction, an essential part
+of complete PNG support, required reasonably fast floating point.
+
+As part of this the choice of internal implementation has been made
+independent of the choice of fixed versus floating point APIs and all the
+missing fixed point APIs have been implemented.
+
+The exact mechanism used to control attributes of API functions has
+changed, as described in the INSTALL file.
+
 A new test program, pngvalid, is provided in addition to pngtest.
 pngvalid validates the arithmetic accuracy of the gamma correction
 calculations and includes a number of validations of the file format.
diff --git a/libpng.3 b/libpng.3
index 1a0cf3cec..4231155bb 100644
--- a/libpng.3
+++ b/libpng.3
@@ -5398,6 +5398,18 @@ limits are now
 The png_set_option() function (and the "options" member of the png struct) was
 added to libpng-1.5.15.
 
+The library now supports a complete fixed point implementation and can
+thus be used on systems that have no floating point support or very
+limited or slow support.  Previously gamma correction, an essential part
+of complete PNG support, required reasonably fast floating point.
+
+As part of this the choice of internal implementation has been made
+independent of the choice of fixed versus floating point APIs and all the
+missing fixed point APIs have been implemented.
+
+The exact mechanism used to control attributes of API functions has
+changed, as described in the INSTALL file.
+
 A new test program, pngvalid, is provided in addition to pngtest.
 pngvalid validates the arithmetic accuracy of the gamma correction
 calculations and includes a number of validations of the file format.