[css-values-4] Non-property contexts treat math functions as specified values. w3c#7964

Author: tabatkins

css-values-4/Overview.bs

@@ -4409,6 +4409,11 @@ Simplification</h4>
 	combining similar units,
 	etc.).
 
+	When used in non-property contexts
+	(such as in ''@font-face'' descriptors, for example),
+	[=math functions=] are simplified
+	as if they were [=specified values=].
+
 	<div algorithm>
 		To <dfn export local-lt="simplify" lt="simplify a calculation tree|simplifying a calculation tree">simplify a calculation tree</dfn> |root|:
 
@@ -4865,6 +4870,11 @@ Serialization</h3>
 		which then drops the ''calc()'' wrapper.)
 	</div>
 
+	When used in non-property contexts
+	(such as in ''@font-face'' descriptors, for example),
+	[=math functions=] are simplified
+	as if they were [=specified values=].
+
 	See [[!CSSOM]] for further information on serialization.
 
 <h3 id='combine-math'>