[css-text-3] Editorial tweaks to language/writing-system prose.

Author: fantasai

css-text-3/Overview.bs

@@ -169,33 +169,33 @@ Value Definitions</h3>
 Languages and Typesetting</h3>
 
   <p class="advisement"><strong>
-    Authors should language-tag their content accurately for the best typographic behavior,
+    Authors should accurately language-tag their content for the best typographic behavior.
   </strong>
-    e.g. using the <code>lang</code> attribute in HTML or <code>xml:lang</code> attribute in XML.
 
-  <p>The <dfn export>content language</dfn> of an element is the (human) language
+    The <dfn export>content language</dfn> of an element is the (human) language
     the element is declared to be in, according to the rules of the
     <a href="https://www.w3.org/TR/CSS2/conform.html#doclanguage">document language</a>.
-    For example, the rules for determining the <a>content language</a> of an HTML element
-    are <a href="https://html.spec.whatwg.org/multipage/dom.html#language">defined</a> in [[HTML]],
-    and the rules for determining the <a>content language</a> of an XML element use
-    are <a href="https://www.w3.org/TR/REC-xml/#sec-lang-tag">defined</a> in [[XML10]].
     Note that it is possible for the <a>content language</a> of an element
     to be unknown--
     e.g. untagged content,
     or content in a <a>document language</a> that does not have a language-tagging facility
     is considered to have an unknown <a>content language</a>.
 
+    Note: Authors can tag content using the global <code>lang</code> attribute in HTML
+    or the universal <code>xml:lang</code> attribute in XML.
+    See the <a href="https://html.spec.whatwg.org/multipage/dom.html#language">rules
+    for determining the content language of an HTML element</a> in [[HTML]],
+    and the <a href="https://www.w3.org/TR/REC-xml/#sec-lang-tag">rules
+    for determining the content language of an XML element</a> in [[XML10]].
+
     The [=content language=] an element is declared to be in
     also identifies the specific written form of that language used in that element,
     known as the <dfn export local-lt="writing system">content writing system</dfn>.
+    Depending on the [=document language=]'s facilities for identifying the [=content language=],
+    this information can be explicit or implied.
+    See the normative [[#script-tagging]].
 
-    Note: Depending on the [=document language=]'s facilities for identifying the [=content language=],
-    information about the [=writing system=] may only be carried implicitly.
-    That is typically the case with the [[BCP47]] language tag used in [[HTML]],
-    although it can optionally indicate the [=writing system=] explicitly
-    using a script subtag.
-
+    Many typographic effects vary by linguistic context.
     Language and writing system conventions can affect
     line breaking, hyphenation, justification, glyph selection,
     and many other typographic effects.
@@ -205,10 +205,6 @@ Languages and Typesetting</h3>
     higher quality typography requires authors to communicate to the UA
     the correct linguistic context of the text in the document.
 
-    More information about language tags and their interpretation,
-    particularly the use of script tags for atypical language + writing-system combinations,
-    can be found in [[#script-tagging]].
-
 <h3 id="characters">
 Characters and Letters</h3>
 
@@ -5571,16 +5567,18 @@ Tagging Content by Writing System</h2>
 	<p><em>This appendix is normative.</em></p>
 
 	While most languages have a preferred writing system,
-	many can also be transcribed into a different writing system.
+	some have multiple, and
+	most can also be transcribed into one or more foreign writing systems.
 	As a common example, most languages have at least one Latin transcription,
 	and can thus be written in the Latin writing system.
-	In these cases the document typically adopts the typographic conventions of the Latin writing system:
+	Such docouments typically adopt the typographic conventions of the Latin writing system:
 	for example Japanese “romaji” and Chinese Pinyin use Latin letters and word spaces,
 	and follow Latin line-breaking and justification practices accordingly.
 	As another example, historical ideographic Korean
 	(<code>ko-Hani</code>)
 	does not use word spaces,
-	and should therefore be typeset as for Chinese.
+	and should therefore be typeset similar to Chinese
+	rather than modern Korean.
 
 	In [[HTML]] or any other <a>document language</a> using [[BCP47]] to identify the [=content language=],
 	authors can indicate the use of an atypical writing system