[css-values-3] Clarify that clamping is not performed on specified values. Linkify different types of values. #434

Author: fantasai

css-values-3/Overview.bs

@@ -1742,10 +1742,11 @@ Range Checking</h4>
 	and therefore out-of-range values do not cause the declaration to become invalid.
 	However, the value resulting from an expression
 	must be clamped to the range allowed in the target context.
-	Clamping is performed on computed values to the extent possible,
-	and also on used values
+	Clamping is performed on <a>computed values</a> to the extent possible,
+	and also on <a>used values</a>
 	if computation was unable to sufficiently simplify the expression
 	to allow range-checking.
+	(Clamping is not performed on <a>specified values</a>.)
 
 	Note: This requires all contexts accepting ''calc()''
 	to define their allowable values as a closed (not open) interval.

css-values-4/Overview.bs

@@ -1882,10 +1882,11 @@ Range Checking</h4>
 	and therefore out-of-range values do not cause the declaration to become invalid.
 	However, the value resulting from an expression
 	must be clamped to the range allowed in the target context.
-	Clamping is performed on computed values to the extent possible,
-	and also on used values
+	Clamping is performed on <a>computed values</a> to the extent possible,
+	and also on <a>used values</a>
 	if computation was unable to sufficiently simplify the expression
 	to allow range-checking.
+	(Clamping is not performed on <a>specified values</a>.)
 
 	Note: This requires all contexts accepting ''calc()''
 	to define their allowable values as a closed (not open) interval.