Merge pull request #255 from KhronosGroup/spec-policy

Add a "Specification Update Policy" to Khronos-approved extensions
diff --git a/index.php b/index.php
index d8effb4..7d99f7e 100644
--- a/index.php
+++ b/index.php
@@ -38,9 +38,9 @@
     for new extension APIs. A set of Python scripts are provided to load the
     XML files and process them into header files. </p>
 
-<p> See <a href="xml/README.md"> xml/README.md </a> for more details of how
-    to obtain enumerant allocations, create extension specifications and
-    register them, and other related topics.
+<p> See <a href="xml/README.md"> xml/README.md </a> for more details of the
+    API XML registry, how to obtain enumerant allocations, create extension
+    specifications and register them, and other related topics.
 
 <?php include_once("../../assets/static_pages/khr_page_bottom.php"); ?>
 </body>
diff --git a/index_es.php b/index_es.php
index 66cbf3d..03d17d5 100644
--- a/index_es.php
+++ b/index_es.php
@@ -4,13 +4,15 @@
 include_once("../../assets/static_pages/khr_page_top.php");
 ?>
 
-<p> The OpenGL ES registry contains specifications of the core API and
+<p> The OpenGL ES Registry contains specifications of the core API and
     shading language; specifications of Khronos- and vendor-approved
     OpenGL ES extensions; header files corresponding to the
-    specifications; and other related documentation. The companion <a
-    href="http://www.opengl.org/registry/"> OpenGL Registry </a> has
-    related material including the API registry of reserved enumerants
-    and functions (shared between OpenGL ES and OpenGL). </p>
+    specifications; and related documentation. </p>
+
+<p> The OpenGL ES Registry is part of the combined <a
+    href="http://www.opengl.org/registry/"> OpenGL Registry </a> for OpenGL,
+    OpenGL ES, and OpenGL SC, which includes the <a href="xml/README.md">XML
+    API registry</a> of reserved enumerants and functions. </p>
 
 <p> <b>Table of Contents</b>
 <ul>
diff --git a/index_gl.php b/index_gl.php
index ba1c5e3..46332c8 100644
--- a/index_gl.php
+++ b/index_gl.php
@@ -4,17 +4,16 @@
 include_once("../../assets/static_pages/khr_page_top.php");
 ?>
 
-<p> The OpenGL Registry contains specifications, header files, and
-    related documentation for OpenGL and related APIs including GLU,
-    GLX, and WGL. In addition to the core API specifications, many
-    extensions to these APIs have been defined by vendors, groups of
-    vendors, and the ARB. The Registry also contains specifications and
-    header files for all registered extensions, written as modifications
-    to the appropriate core API specifications. </p>
+<p> The OpenGL Registry contains specifications of the core API and
+    shading language; specifications of Khronos- and vendor-approved
+    OpenGL extensions; header files corresponding to the specifications; and
+    related documentation including specifications, extensions, and headers
+    for the GLX, WGL, and GLU APIs. </p>
 
-<p> The Registry also includes naming conventions, guidelines for
-    creating new extensions and writing suitable extension
-    specifications, and other documentation related to these APIs. </p>
+<p> The OpenGL registry is part of the combined <a
+    href="http://www.opengl.org/registry/"> OpenGL Registry </a> for OpenGL,
+    OpenGL ES, and OpenGL SC, which includes the <a href="xml/README.md">XML
+    API registry</a> of reserved enumerants and functions. </p>
 
 <p> <b>Table of Contents</b>
 <ul>
diff --git a/index_sc.php b/index_sc.php
index 3f0a75d..f572880 100644
--- a/index_sc.php
+++ b/index_sc.php
@@ -4,13 +4,15 @@
 include_once("../../assets/static_pages/khr_page_top.php");
 ?>
 
-<p> The OpenGL SC registry contains specifications of the core API;
+<p> The OpenGL SC Registry contains specifications of the core API;
     specifications of Khronos- and vendor-approved OpenGL SC extensions;
-    header files corresponding to the specifications; and other related
-    documentation. The companion <a
-    href="http://www.opengl.org/registry/"> OpenGL Registry </a> has
-    related material including the enumerant registry (shared between
-    OpenGL, OpenGL ES, and OpenGL SC).
+    header files corresponding to the specifications; and related
+    documentation. </p>
+
+<p> The OpenGL SC Registry is part of the combined <a
+    href="http://www.opengl.org/registry/"> OpenGL Registry </a> for OpenGL,
+    OpenGL ES, and OpenGL SC, which includes the <a href="xml/README.md">XML
+    API registry</a> of reserved enumerants and functions. </p>
 
 <h2> OpenGL SC Core API Specification, Headers, and Documentation </h2>