[css-counter-styles] Require i18n's Ready-Made Counter Styles w3c#8636

w3c#8636 (comment)
https://lists.w3.org/Archives/Public/www-style/2023Jun/0003.html

css-counter-styles-3/Overview.bs

@@ -2515,12 +2515,18 @@ Ethiopic Numeric Counter Style: ''ethiopic-numeric''</h3>
 <h2 id='additional-predefined'>
 Additional “Ready-made” Counter Styles</h2>
 
-	The Internationalization Working Group maintains a large list of ready-made ''@counter-style'' rules for various world languages
-	in their <a href="https://www.w3.org/TR/predefined-counter-styles/">Ready-made Counter Styles</a> document.
+	The <a href="https://www.w3.org/International/">Internationalization Working Group</a>
+	maintains a collection of additional ''@counter-style'' rules for various world languages
+	in <a href="https://www.w3.org/TR/predefined-counter-styles/">Ready-made Counter Styles</a>.
 	[[predefined-counter-styles]]
 
-	These additional counter styles are not intended to be supported by user-agents by default,
-	but can be used by users or authors copying them directly into style sheets.
+	As with the counter styles defined in [[#predefined-counters]],
+	UAs must include these in their UA stylesheet
+	(or at least act as if these rules were defined at that level).
+
+	Note: Authors can use the <a href="https://www.w3.org/TR/predefined-counter-styles/">Ready-made Counter Styles</a>
+	even in UAs that don't support them
+	by copying the rules directly into their style sheets.
 
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