[css-text-3] Clarifications to line breaking. #2559

css-text-3/Overview.bs

@@ -968,13 +968,13 @@ Line Breaking Details</h3>
       i.e. where it is “normal” and permissible to break lines of text.
       Specifically it controls whether a <a>soft wrap opportunity</a> exists
       between adjacent <a>typographic letter units</a>
-      (or other <a>typographic character units</a>
+      (and/or non-<a>letter</a> <a>typographic character units</a>
       belonging to the
       <code>NU</code>, <code>AL</code>, <code>AI</code>, or <code>ID</code>
       Unicode line breaking classes [[!UAX14]]).
       It does not affect rules governing the <a>soft wrap opportunities</a>
-      created by spaces (including U+3000 IDEOGRAPHIC SPACE) and punctuation.
-      (See 'line-break' for controls affecting punctuation.)
+      created by spaces (including U+3000 IDEOGRAPHIC SPACE) and around punctuation.
+      (See 'line-break' for controls affecting punctuation and small kana.)
 
     <div class="example">
       <p>For example, in some styles of CJK typesetting, English words are allowed
@@ -1035,13 +1035,13 @@ Line Breaking Details</h3>
         Unicode line breaking classes [[!UAX14]])
         are suppressed,
         i.e. breaks are prohibited between pairs of such characters
-        (regardless of 'line-break' settings)
+        (regardless of 'line-break' settings other than ''line-break/anywhere'')
         except where opportunities exist due to dictionary-based breaking.
         Otherwise this option is equivalent to ''word-break/normal''.
         In this style, sequences of CJK characters do not break.
         <p class=note>Note: This is the other common behavior for Korean (which uses spaces between words),
         and is also useful for mixed-script text where CJK snippets are mixed
-        into another language that uses spaces for separation.</dd>
+        into another language that uses spaces for separation.
     </dl>
 
     <p>Symbols that line-break the same way as letters of a particular category
@@ -1156,7 +1156,7 @@ Line Breaking Details</h3>
 
     <p>This property specifies the strictness of line-breaking rules applied
       within an element:
-      particularly how <a>wrapping</a> interacts with punctuation and symbols.
+      especially how <a>wrapping</a> interacts with punctuation and symbols.
       Values have the following meanings:</p>
 
     <dl dfn-for=line-break dfn-type=value>
@@ -1176,7 +1176,9 @@ Line Breaking Details</h3>
       <dd>There is a <a>soft wrap opportunity</a> around every <a>typographic character unit</a>,
       including around any punctuation character or preserved spaces,
       or in the middle of words,
-      disregarding any prohibition against line breaks introduced by characters with the GL, WJ, or ZWJ character class (see [[UAX14]]).
+      disregarding any prohibition against line breaks,
+      even those introduced by characters with the GL, WJ, or ZWJ character class (see [[UAX14]])
+      or mandated by the 'word-break' property.
       The different wrapping opportunities must not be prioritized.
       Hyphenation is not applied.