[css-fonts-4] Added generic(khmer-mul) w3c#10036

Author: svgeesus

css-fonts-4/Overview.bs

@@ -376,7 +376,7 @@ Syntax of <<generic-family>>
 
 <pre class=prod>
 	<dfn><<generic-family>></dfn> = <<generic-script-specific>>| <<generic-complete>> | <<generic-incomplete>>
-	<dfn><<generic-script-specific>></dfn> = ''generic(kai)'' | ''generic(fangsong)'' | ''generic(nastaliq)''
+	<dfn><<generic-script-specific>></dfn> = ''generic(fangsong)'' | ''generic(kai)'' | ''generic(khmer-mul)'' |  ''generic(nastaliq)''
 	<dfn><<generic-complete>></dfn> = ''serif'' | ''sans-serif'' | ''system-ui'' | ''cursive'' | ''fantasy'' | ''math'' | ''monospace''
 	<dfn><<generic-incomplete>></dfn> = ''ui-serif'' | ''ui-sans-serif'' | ''ui-monospace'' | ''ui-rounded''
 </pre>
@@ -668,6 +668,36 @@ Generic font families</h4>
 			</figure>
 		</dd>
 
+		<dt id="generic(khmer-mul)-def"><dfn>generic(khmer-mul)</dfn>
+		<dd>
+			This font family is used in
+			the Khmer language (used in Cambodia),
+			for titles and headings,
+			or to emphasise important names or nouns.
+			Compared to the upright (âksâr chôr) style,
+			which is used for regular text,
+			âksâr mul is characterized by 
+			heavier, more rounded letter shapes, 
+			and may include more ligated forms.
+
+			Despite the visually heavier style,
+			the font weight for regular text in 
+			''generic(khmer-mul)'' is unchanged (400).
+
+			Note: ''generic(khmer-mul)'' might not map to 
+			any locally installed font,
+			but if it does, that font will be in âksâr mul style.
+
+			<figure>
+				<img style="width:30vw" alt="" src="images/vi-tu-comparison.png">
+				<figcaption>Cambodian text displayed in:
+					(top) âksâr chôr style, set in Chantrea UI, by Sovichet Tep;
+					(center) âksâr mul style, set in Khmer OS Moul, by Dan Hong, with no ligatures;
+					(bottom) âksâr mul style, set in Khmer Moul, by pen sokha, with a ligature.
+				</figcaption>
+			</figure>
+		</dd>
+
 		<dt id="generic(nastaliq)-def"><dfn>generic(nastaliq)</dfn>
 		<dd>
 			This font family is the standard way of writing Urdu and Kashmiri,