[css-values-5] Address cdoublev's review #10457

Author: fantasai

css-values-5/Overview.bs

@@ -224,8 +224,8 @@ Boolean Expression Multiplier <<boolean[]>></h3>
 
 	The <<boolean[]>> notation wraps another value type in the square brackets within it,
 	e.g. &lt;boolean[ &lt;test&gt; ]&gt;,
-	and represents that value alone as well as
-	boolean combinations of those values
+	and represents that value type alone as well as
+	boolean combinations
 	using the ''not'', ''and'', and ''or'' keywords
 	and grouping parenthesis.
 	It is formally equivalent to:
@@ -235,21 +235,22 @@ Boolean Expression Multiplier <<boolean[]>></h3>
 		                                            [ [ and <boolean-group> ]*
 		                                            | [ or <boolean-group> ]* ]
 
-		<boolean-group> = <test> | ( <boolean> ) | <general-enclosed>
+		<boolean-group> = <test> | ( <boolean[ <test> ]> ) | <general-enclosed>
 	</xmp>
 
-	The <<boolean[]>> production represents a true, false, or unknown value,
+	The <<boolean[]>> production represents a true, false, or unknown value.
+	Its value is resolved using 3-value Kleene logic,
 	with top-level unknown values
 	(those not directly nested inside the grammar of another <<boolean[]>>)
-	resolving to false unless otherwise specified.
-	Its value is resolved using 3-value Kleene logic;
+	resolving to false unless otherwise specified;
 	see [[#boolean-logic]] for details.
 
 	<div class=example>
 		For example, the ''@container'' rule allows a wide variety of tests:
 		including size queries, style queries, and scroll-state queries.
 		All of these are arbitrarily combinable with boolean logic.
-		Using <<boolean[]>>, the grammar for an ''@container'' query is:
+		Using <<boolean[]>>, the grammar for an ''@container'' query
+		could be written as:
 
 		<xmp class=prod>
 			<container-query> = <boolean[ <cq-test> ]>