notes in text-spacing

guidelines/sc/21/text-spacing.html

@@ -15,10 +15,8 @@ <h4>Text Spacing</h4>
 
  <p>Exception: Human languages and scripts that do not make use of one or more of these text style properties in written text can conform using only the properties that exist for that combination of language and script.</p>
 
- <p class="note">It is not required that content use the values specified. The requirement is to ensure no loss of content or functionality when a user overrides the authored styles with the values.</p>
+ <p class="note">Content is not required to use these text spacing values. The requirement is to ensure that <strong>when a user overrides</strong> the authored text spacing, content or functionality is not lost.</p>
 
-<p class="note">Some human languages or writing systems have different needs and may adjust other values (such as paragraph start indent) in order to improve legibility. This success criterion might not be sufficient for those needs.</p>
-
-<p class="note">It is beneficial for users if authors use any locally available guidance for improving readability in the local language or writing system. If the user chooses to go beyond the metrics specified, any resulting loss of content or functionality is the user's responsibility.</p>
+ <p class="note">Writing systems for some languages use different text spacing settings, such as paragraph start indent. Authors are encouraged to follow guidance for improving readability and legibility of text in their writing system.</p>
 
 </section>