Define standalone and add notes about a: and ə.

sunu/suz.html

@@ -59,7 +59,7 @@ <h2 class="notoc flush"><a id="tochead">Contents</a></h2>
 
 
 <p id="status">Updated 
-<!-- #BeginDate format:Sw1 -->30 October, 2023<!-- #EndDate -->
+<!-- #BeginDate format:Sw1 -->31 October, 2023<!-- #EndDate -->
 <span id="versionTop"></span>
 </p>
 
@@ -690,6 +690,10 @@ <h3>Vowel letters</h3>
 <p>Sunuwar uses 6 ordinary spacing letters to write  vowel sounds.</p>
 
 <figure class="characterBox auto"  data-cols="ipa,trans,transc">𑯃␣𑯅␣𑯂␣𑯑␣𑯈␣𑯖</figure>
+
+<p>In Sikkim, the letter <span class="hx">11BC8</span> is normally used to represent the sound <span class="ipa">ə</span> at the beginning of a word or after a vowel, but not after a consonant, since it represents the sound of the inherent vowel. In Nepal, the sound <span class="ipa">ə</span> is written using this letter wherever it occurs.</p>
+
+<p>Although the letter <span class="hx">11BD6</span> was initially introduced to represent the long <span class="ipa">aː</span> sound, it's use is sometimes inconsistent and may represent a shorter sound.</p>
 </section>
 
 
@@ -701,6 +705,7 @@ <h3>Vowel letters</h3>
 
 <section id="standalone">
 <h3>Standalone vowels</h3>
+<p id="def-standalonevowel" class="explanatoryintro definitionStub"></p>
 
 
 <p>In Nepal, no distinction is made between letters to represent standalone vowels and other vowel usage.</p>