diff --git a/src/character-set.html b/src/character-set.html
index 18a15367..42b3e15a 100644
--- a/src/character-set.html
+++ b/src/character-set.html
@@ -526,6 +526,226 @@ <h4 id="chars_comb-chars">Combining Characters</h4>
 
   </section>
 
+ <section>
+   <h4 id="accent-characters">Accent Characters</h4>
+
+   <p> There are a large number of look-alike characters that might be used to for
+    accents or diacritical marks above or below a base element.
+    However, fonts have limitations as to which of these can stretch and which have
+    proper positioning when used as accents. This section has recommendations
+    for which characters to use as accents in MathML. It is important to note that
+    only a limited number of fonts support proper mathematical layout.
+    Browsers and likely other software currently require the use of fonts with an OpenType MATH table.
+  
+<table>
+  <thead>
+    <tr>
+      <th>Unicode</th>
+      <th>Description</th>
+      <th>Glyph</th>
+      <th>Example</th>
+      <th>Stretchy</th>
+      <th>Comments</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+			<td>U+0060</td>
+			<td>grave</td>
+			<td>&#x0060;</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x0060;</mo></mover></math></td>
+			<td></td>
+			<td>U+0300 looks poor in Chrome</td>
+		</tr>
+    <tr>
+			<td>U+00B4</td>
+			<td>acute</td>
+			<td>&#x00B4;</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x00B4;</mo></mover></math></td>
+			<td></td>
+			<td>U+0301 looks poor in Chrome</td>
+		</tr>
+    <tr>
+			<td>U+0302</td>
+			<td>hat</td>
+			<td>◌̂</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x0302;</mo></mover></math></td>
+			<td><math><mover accent="true"><mrow><mi>x</mi><mo>+</mo><mi>y</mi></mrow><mo stretchy='true'>&#x0302;</mo></mover></math></td>
+			<td>U+005E doesn't stretch in Chrome</td>
+		</tr>
+    <tr>
+			<td>U+007E</td>
+			<td>tilde</td>
+			<td>&#x007E;</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x007E;</mo></mover></math></td>
+			<td><math><mover accent="true"><mrow><mi>x</mi><mo>+</mo><mi>y</mi></mrow><mo stretchy='true'>&#x007E;</mo></mover></math></td>
+			 <td>U+0303 doesn't stretch; U+007E doesn't stretch in Chrome</td>
+		</tr>
+    <tr>
+			<td>U+005F</td>
+			<td>lowline (mover)</td>
+			<td>&#x005F;</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x005F;</mo></mover></math></td>
+			<td><math><mover accent="true"><mrow><mi>x</mi><mo>+</mo><mi>y</mi></mrow><mo stretchy='true'>&#x005F;</mo></mover></math></td>
+			<td>U+00AF (overline) doesn't stretch in Chrome and displays poorly in Safari. U+0304 and U+0305 don't stretch anywhere</td>
+		</tr>
+    <tr>
+			<td>U+005F</td>
+			<td>lowline (munder)</td>
+			<td>&#x005F;</td>
+			<td><math><munder accent="true"><mi>x</mi><mo>&#x005F;</mo></munder></math></td>
+			<td><math><munder accent="true"><mrow><mi>x</mi><mo>+</mo><mi>y</mi></mrow><mo stretchy='true'>&#x005F;</mo></munder></math></td>
+			<td>U+005F is a little better than U+0332, but Chrome doesn't stretch either for a few fonts and Safari doesn't stretch either for many fonts</td>
+		</tr>
+    <tr>
+			<td>U+02D8</td>
+			<td>breve</td>
+			<td>◌̆</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x02D8;</mo></mover></math></td>
+			 <td></td>
+			 <td>U+02D8 is a little better horizontally positioned than U+0306</td>
+		</tr>
+    <tr>
+			<td>U+02D9</td>
+			<td>dot above</td>
+			<td>&#x02D9;</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x02D9;</mo></mover></math></td>
+			 <td></td>
+			 <td>U+002E is similar; U+0307 displays poorly in Chrome and Safari</td>
+		</tr>
+    <tr>
+			<td>U+00A8</td>
+			<td>double dot</td>
+			<td>◌̈</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x00A8;</mo></mover></math></td>
+			 <td></td>
+			 <td>U+0308 displays poorly in Chrome</td>
+		</tr>
+    <tr>
+			<td>U+20DB</td>
+			<td>triple dots</td>
+			<td>⃛</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x20DB;</mo></mover></math></td>
+			 <td></td>
+			 <td>displays poorly in Chrome</td>
+		</tr>
+    <tr>
+			<td>U+20DC</td>
+			<td>quadruple dots</td>
+			<td>⃜</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x20DC;</mo></mover></math></td>
+			 <td></td>
+			 <td>displays poorly in Chrome</td>
+		</tr>
+    <tr>
+			<td>U+0309</td>
+			<td>hook above</td>
+			<td>◌̉</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x0309;</mo></mover></math></td>
+			 <td></td>
+			 <td>displays poorly in Chrome</td>
+		</tr>
+    <tr>
+			<td>U+02DA</td>
+			<td>ring</td>
+			<td>&#x02DA;</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x02DA;</mo></mover></math></td>
+			 <td></td>
+			 <td>U+030A displays poorly in Chrome</td>
+		</tr>
+    <tr>
+			<td>U+02C7</td>
+			<td>caron</td>
+			<td>&#x02C7;</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x02C7;</mo></mover></math></td>
+			 <td></td>
+			 <td>U+030C displays poorly in Chrome</td>
+		</tr>
+    <tr>
+			<td>U+21BC</td>
+			<td>left harpoon</td>
+			<td>&#x21BC;</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x21BC;</mo></mover></math></td>
+			<td><math><mover accent="true"><mrow><mi>x</mi><mo>+</mo><mi>y</mi></mrow><mo stretchy='true'>&#x21BC;</mo></mover></math></td>
+			<td>U+20D0 is poorly positioned in Chrome and doesn't stretch in most fonts in Safari. It is better in Firefox and Safari for single characters because U+21BC is a little long. </td>
+		</tr>
+    <tr>
+			<td>U+21C0</td>
+			<td>right harpoon</td>
+			<td>&#x21C0;</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x21C0;</mo></mover></math></td>
+			<td><math><mover accent="true"><mrow><mi>x</mi><mo>+</mo><mi>y</mi></mrow><mo stretchy='true'>&#x21C0;</mo></mover></math></td>
+			<td>U+20D1 is poorly positioned in Chrome and doesn't stretch in most fonts in Safari. U+20D1 is better in Firefox and Safari for single characters because U+21C0 is a little long. </td>
+		</tr>
+    <tr>
+			<td>U+2192</td>
+			<td>right arrow</td>
+			<td>⃗</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x2192;</mo></mover></math></td>
+			<td><math><mover accent="true"><mrow><mi>x</mi><mo>+</mo><mi>y</mi></mrow><mo stretchy='true'>&#x2192;</mo></mover></math></td>
+			<td>U+20D7 is poorly positioned in Chrome and doesn't stretch in most fonts in Safari. U+20D7 is better in Firefox and Safari for single characters because U+2192 is a little long. U+27F6 doesn't stretch in Chrome and Safari, and is too long for single characters. </td>
+		</tr>
+    <tr>
+			<td>U+23B4</td>
+			<td>top square bracket</td>
+			<td>&#x23B4;</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x23B4;</mo></mover></math></td>
+			<td><math><mover accent="true"><mrow><mi>x</mi><mo>+</mo><mi>y</mi></mrow><mo stretchy='true'>&#x23B4;</mo></mover></math></td>
+			 <td></td>
+			 <td></td>
+		</tr>
+    <tr>
+			<td>U+23B5</td>
+			<td>bottom square bracket</td>
+			<td>&#x23B5;</td>
+			<td><math><munder><mi>x</mi><mo>&#x23B5;</mo></munder></math></td>
+			<td><math><munder><mrow><mi>x</mi><mo>+</mo><mi>y</mi></mrow><mo stretchy='true'>&#x23B5;</mo></munder></math></td>
+			 <td></td>
+			 <td></td>
+		</tr>
+    <tr>
+			<td>U+23DC</td>
+			<td>top parenthesis</td>
+			<td>&#x23DC;</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x23DC;</mo></mover></math></td>
+			<td><math><mover accent="true"><mrow><mi>x</mi><mo>+</mo><mi>y</mi></mrow><mo stretchy='true'>&#x23DC;</mo></mover></math></td>
+			 <td></td>
+			 <td></td>
+		</tr>
+    <tr>
+			<td>U+23DD</td>
+			<td>bottom parenthesis</td>
+			<td>&#x23DD;</td>
+			<td><math><munder><mi>x</mi><mo>&#x23DD;</mo></munder></math></td>
+			<td><math><munder><mrow><mi>x</mi><mo>+</mo><mi>y</mi></mrow><mo stretchy='true'>&#x23DD;</mo></munder></math></td>
+			 <td></td>
+			 <td></td>
+		</tr>
+    <tr>
+			<td>U+23DE</td>
+			<td>top curly bracket</td>
+			<td>&#x23DE;</td>
+			<td><math><mover accent="true"><mi>x</mi><mo>&#x23DE;</mo></mover></math></td>
+			<td><math><mover accent="true"><mrow><mi>x</mi><mo>+</mo><mi>y</mi></mrow><mo stretchy='true'>&#x23DE;</mo></mover></math></td>
+			 <td></td>
+			 <td></td>
+		</tr>
+    <tr>
+			<td>U+23DF</td>
+			<td>bottom curly bracket</td>
+			<td>&#x23DF;</td>
+			<td><math><munder><mi>x</mi><mo>&#x23DF;</mo></munder></math></td>
+			<td><math><munder><mrow><mi>x</mi><mo>+</mo><mi>y</mi></mrow><mo stretchy='true'>&#x23DF;</mo></munder></math></td>
+			 <td></td>
+			 <td></td>
+		</tr>
+  </tbody>
+</table>
+
+</p>
+
+ </section>
+
  </section>
 
 </section>

Unicode	Description	Glyph	Example	Stretchy	Comments
U+0060	grave	`	$\overset{`}{x}$		U+0300 looks poor in Chrome
U+00B4	acute	´	$\overset{´}{x}$		U+0301 looks poor in Chrome
U+0302	hat	◌̂	$\hat{x}$	$\hat{x + y}$	U+005E doesn't stretch in Chrome
U+007E	tilde	~	$\tilde{x}$	$\tilde{x + y}$	U+0303 doesn't stretch; U+007E doesn't stretch in Chrome
U+005F	lowline (mover)	_	$\overline{x}$	$\overline{x + y}$	U+00AF (overline) doesn't stretch in Chrome and displays poorly in Safari. U+0304 and U+0305 don't stretch anywhere
U+005F	lowline (munder)	_	$\underline{x}$	$\underline{x + y}$	U+005F is a little better than U+0332, but Chrome doesn't stretch either for a few fonts and Safari doesn't stretch either for many fonts
U+02D8	breve	◌̆	$\overset{˘}{x}$		U+02D8 is a little better horizontally positioned than U+0306
U+02D9	dot above	˙	$\dot{x}$		U+002E is similar; U+0307 displays poorly in Chrome and Safari
U+00A8	double dot	◌̈	$\ddot{x}$		U+0308 displays poorly in Chrome
U+20DB	triple dots	⃛	$\overset{⃛}{x}$		displays poorly in Chrome
U+20DC	quadruple dots	⃜	$\overset{⃜}{x}$		displays poorly in Chrome
U+0309	hook above	◌̉	$\overset{̉}{x}$		displays poorly in Chrome
U+02DA	ring	˚	$\overset{˚}{x}$		U+030A displays poorly in Chrome
U+02C7	caron	ˇ	$\overset{ˇ}{x}$		U+030C displays poorly in Chrome
U+21BC	left harpoon	↼	$\overset{↼}{x}$	$\overset{↼}{x + y}$	U+20D0 is poorly positioned in Chrome and doesn't stretch in most fonts in Safari. It is better in Firefox and Safari for single characters because U+21BC is a little long.
U+21C0	right harpoon	⇀	$\overset{⇀}{x}$	$\overset{⇀}{x + y}$	U+20D1 is poorly positioned in Chrome and doesn't stretch in most fonts in Safari. U+20D1 is better in Firefox and Safari for single characters because U+21C0 is a little long.
U+2192	right arrow	⃗	$\vec{x}$	$\vec{x + y}$	U+20D7 is poorly positioned in Chrome and doesn't stretch in most fonts in Safari. U+20D7 is better in Firefox and Safari for single characters because U+2192 is a little long. U+27F6 doesn't stretch in Chrome and Safari, and is too long for single characters.
U+23B4	top square bracket	⎴	$\overset{⎴}{x}$	$\overset{⎴}{x + y}$
U+23B5	bottom square bracket	⎵	$\underset{⎵}{x}$	$\underset{⎵}{x + y}$
U+23DC	top parenthesis	⏜	$\overset{⏜}{x}$	$\overset{⏜}{x + y}$
U+23DD	bottom parenthesis	⏝	$\underset{⏝}{x}$	$\underset{⏝}{x + y}$
U+23DE	top curly bracket	⏞	$\overset{⏞}{x}$	$\overset{⏞}{x + y}$
U+23DF	bottom curly bracket	⏟	$\underset{⏟}{x}$	$\underset{⏟}{x + y}$