Add non-sequitur because I've had 3 hours of sleep and don't want to think about it. Add non-normative statement in front of intro.

Author: fantasai

css3-writing-modes/Overview.html

@@ -224,6 +224,8 @@ <h2 class="no-num no-toc" id=Contents>Contents</h2>
 
   <h2 id=intro><span class=secno>1. </span>Introduction</h2>
 
+  <p><em>This section is non-normative.</em>
+
   <p>This module defines support for various international writing
    directions, such as left-to-right (e.g., Latin scripts), right-to-left
    (e.g., Hebrew or Arabic), bidirectional (e.g., mixing Latin with Arabic)
@@ -264,6 +266,9 @@ <h3 id=vertical-intro><span class=secno>1.1. </span>Introduction to
    <p class=caption>iBunko application (iOS)</p>
   </div>
 
+  <p class=note>For Chinese and Japanese lines are ordered either right to
+   left, while for Mongolian and Manchu left to right.
+
   <p>Vertical text that includes Latin script text or text from other scripts
    normally displayed horizontally can display that text in a number of ways.
    In the example below, the word "Virus" is shown rotated inline while the

css3-writing-modes/Overview.src.html

@@ -68,6 +68,8 @@ <h2 class="no-num no-toc" id="Contents">Contents</h2>
 
 <h2 id="intro">Introduction</h2>
 
+  <p><em>This section is non-normative.</em></p>
+
   <p>This module defines support for various international writing directions,
     such as left-to-right (e.g., Latin scripts), right-to-left (e.g., Hebrew
     or Arabic), bidirectional (e.g., mixing Latin with Arabic) and vertical
@@ -107,6 +109,9 @@ <h3 id="vertical-intro">Introduction to Vertical Text</h3>
     <p class="caption">iBunko application (iOS)</p>
   </div>
 
+  <p class="note">For Chinese and Japanese lines are ordered either right
+    to left, while for Mongolian and Manchu left to right.</p>
+
   <p>Vertical text that includes Latin script text or text from other scripts
     normally displayed horizontally can display that text in a number of
     ways. In the example below, the word "Virus" is shown rotated inline