[css-fonts-4] Clarified that clamping to the variable range also affects implied variation axes w3c#7999

Author: svgeesus

css-fonts-4/Overview.bs

@@ -3205,7 +3205,10 @@ Font property descriptors: the 'font-style!!descriptor', 'font-weight!!descripto
 	where the font descriptors imply this is needed,
 	rather than based on the style attributes implied by the font data.
 	However, variation values applied to fonts defined with '@font-face'
-	will be clamped to both the values specified in these descriptors
+	will be clamped to both the values specified in these descriptors,
+	or implied by the application of variation parameters
+	(such as manipulation of the <code>wght</code> axis
+	to satisfy the requested ''font-weight''),
 	as well as the values supported by the font file itself.
 
 	<div class="example" id="ex-descriptors-matching">