[css-ruby-1] Clarify relationship of ruby and bopomofo tone mark positioning.

Author: fantasai

css-ruby-1/Overview.bs

@@ -1556,18 +1556,27 @@ Appendix A: Default Style Sheet</h2>
 <h2 id="glossary">
 Glossary</h2>
 	<dl>
-		<dt id="g-bopomofo">Bopomofo (Chinese: <span lang=zh-Bopo>ㄅㄆㄇㄈ</span>, <span lang=zh-Hant>注音符號</span>, or <span lang=zh-Hans>注音符号</span>)
+		<dt id="g-bopomofo"><dfn>Bopomofo</dfn> (Chinese: <span lang=zh-Bopo>ㄅㄆㄇㄈ</span>, <span lang=zh-Hant>注音符號</span>, or <span lang=zh-Hans>注音符号</span>)
 		<dd>
-			37 characters and 4 tone markings used as phonetics in Chinese,
+			<p>37 characters and 4 tone markings used as phonetics in Chinese,
 			especially standard Mandarin.
-
-			Note: The user agent is responsible for ensuring the correct relative alignment and positioning of the glyphs,
-			including bopomofo tone marks, when displaying text,
-			whether it occurs in ruby annotations or as normal inline text.
-			Bopomofo Tone marks are spacing characters that occur (in memory) at the end of the ruby text for each base character.
-			They are usually displayed in a separate column to the right of or above the bopomofo characters,
-			and the position of the tone mark depends on the number of characters in the syllable.
-			One tone mark, however, is placed before the bopomofo, not over it.
+			These are often, but not exclusively, used for ruby annotations.
+
+			<dfn>Bopomofo tone marks</dfn> are spacing characters that occur
+			(in memory)
+			at the end of each bopomofo syllable.
+			They are typically displayed in a separate track
+			to the right of or above the other bopomofo characters,
+			and the position of the tone mark depends
+			on the number of characters in the syllable.
+			The neutral tone mark, however,
+			is placed before (and in line with) the bopomofo, not alongside it.
+
+			Note: The user agent and font subsystem are responsible for
+			ensuring the correct relative alignment and positioning of glyphs,
+			including [=bopomofo tone marks=], when displaying text--
+			whether the text occurs in ruby annotations or as normal inline content.
+			Such glyph placement is not a function of CSS ruby layout.
 			<!-- See Taiwanese requirements doc for EPUB at http://epub-revision.googlecode.com/files/EGLS_TW_eng.ppt -->
 
 		<dt id="g-hanja">Hanja (Korean: <span lang=ko>漢字</span>)
@@ -1622,6 +1631,7 @@ Acknowledgments</h2>
 
 	David Baron,
 	Robin Berjon,
+	Susanna Bowen,
 	Stephen Deach,
 	Martin Dürst,
 	Hideki Hiura (<span lang="ja">樋浦 秀樹</span>),

css-ruby-1/issues-wd-2014.bsi

@@ -23,7 +23,8 @@ Summary:  Clarify text run adjacency
 From:     Susanna Bowen
 Comment:  https://lists.w3.org/Archives/Public/www-style/2014Aug/0213.html
 Response: https://lists.w3.org/Archives/Public/www-style/2014Aug/0216.html
-Open:     Needs edits
+Closed:   Accepted
+Resolved: Editorial
 ----
 Issue 4.
 Summary:  Bopomofo tone mark positioning examples