[selectors-4][editorial] Rewrap and minor wording tweaks

Author: fantasai

selectors-4/Overview.bs

@@ -1893,36 +1893,36 @@ The Language Pseudo-class: '':lang()''</h3>
 	the (human) <a>content language</a> of an element is determined,
 	it is possible to write selectors that
 	represent an element based on its <a>content language</a>.
-	The <dfn id='lang-pseudo'>:lang()</dfn> pseudo-class represents an element that
-	is in one of the languages listed in its argument. It accepts
-	a comma-separated list of one or more <a>language ranges</a> as its
-	argument. Each <dfn>language range</dfn> in '':lang()''
+	The <dfn id='lang-pseudo'>:lang()</dfn> pseudo-class,
+	which accepts a comma-separated list of one or more <a>language ranges</a>,
+	represents an element whose [=content language=]
+	is one of the languages listed in its argument.
+	Each <dfn>language range</dfn> in '':lang()''
 	must be a valid CSS <<ident>> or <<string>>.
-	(Language ranges containing asterisks, for example,
+	(Thus language ranges containing asterisks, for example,
 		must be either correctly escaped or quoted as strings,
-		e.g. '':lang(\*-Latn)'' or '':lang("*-Latn")'')
+		e.g. '':lang(\*-Latn)'' or '':lang("*-Latn")''.)
 
 	Note: The <a>content language</a> of an element is defined by the document language.
-	For example, in HTML [[HTML5]], the <a>content language</a> is determined by a
-	combination of the <code>lang</code> attribute, information from
-	<a element>meta</a> elements, and possibly also the protocol (e.g.
-	from HTTP headers). XML languages can use the <code>xml:lang</code>
-	attribute to indicate language information for an element. [[XML10]]
-
-	The element's <a>content language</a> matches a <a>language range</a> if
-	its <a>content language</a>, as represented in BCP 47 syntax,
-	matches the given <a>language range</a> in an <var>extended filtering</var>
+	For example, in HTML [[HTML5]], the <a>content language</a> is determined
+	by a combination of the <code>lang</code> attribute,
+	information from <a element>meta</a> elements,
+	and possibly also the protocol (e.g. from HTTP headers).
+	XML languages can use the <code>xml:lang</code> attribute
+	to indicate language information for an element. [[XML10]]
+
+	An element's <a>content language</a> matches a <a>language range</a> if,
+	when represented in BCP 47 syntax [[BCP47]],
+	it matches that <a>language range</a> in an <var>extended filtering</var>
 	operation per [[RFC4647]] <cite>Matching of Language Tags</cite> (section 3.3.2).
 	The matching is performed [=ASCII case-insensitively=].
 	The <a>language range</a> does not need to be a valid language code to
 	perform this comparison.
 
-	Note: It is recommended that
-	documents and protocols indicate language using codes from BCP 47 [[BCP47]]
-	or its successor, and by means of <code>xml:lang</code> attributes in the
-	case of XML-based documents [[XML10]]. See <a
-	href="http://www.w3.org/International/questions/qa-lang-2or3.html">
-	"FAQ: Two-letter or three-letter language codes."</a>
+	Note: It is recommended that documents and protocols
+	indicate language using codes from [[BCP47]] or its successor,
+	and in the case of XML-based formats, by means of <code>xml:lang</code> attributes. [[XML10]]
+	See <a href="http://www.w3.org/International/questions/qa-lang-2or3.html">“FAQ: Two-letter or three-letter language codes.”</a>
 
 	<div class="example">
 		Examples: