[css-text-decor] Additional clarifications to text line positions

Author: fantasai

css-text-decor/Overview.html

@@ -384,9 +384,10 @@ <h2 id=line-decoration><span class=secno>2. </span> Line Decoration:
    href="#text-shadow"><code class=property>text-shadow</code></a>’,
    filters, and other graphical transformations likewise affect text
    decorations as part of the text they're drawn on, even if the decorations
-   were specified on an ancestor box. (In the case of line decorations drawn
-   over an atomic inline or across box decorations, they are similarly
-   associated with the affected box rather than the <a
+   were specified on an ancestor box, and do not affect the calculation of
+   their initial positions or thicknesses. (In the case of line decorations
+   drawn over an atomic inline or across box decorations, they are
+   analogously associated with the affected box rather than the <a
    href="#decorating-box"><i>decorating box</i></a>.)
 
   <div class=example>
@@ -947,10 +948,6 @@ <h3 id=text-underline-position-property><span class=secno>2.6. </span> Text
    <dd>In horizontal writing modes, the underline is positioned <i>under</i>
     the element's text content. In this case the underline usually does not
     cross the descenders. (This is sometimes called "accounting" underline.)
-    (Note that images that are not affected by the underline per ‘<a
-    href="#text-decoration-skip"><code
-    class=property>text-decoration-skip</code></a>’ will not affect the
-    position of the underline.)
     <div class=figure>
      <p><img
       alt="In a typical Latin font, the underline is far enough                  below the text that it does not cross the bottom of a 'g'."
@@ -1045,12 +1042,13 @@ <h3 id=line-position><span class=secno>2.7. </span> Determining the
    consider, for each <a href="#decorating-box"><i>decorating box</i></a>,
    the “ideal” positions of such line decorations per fragment of the <a
    href="#decorating-box"><i>decorating box</i></a>—or its in-flow inline
-   descendant—that draws the text decoration. However, descendant fragments
-   of the <i>decorating element</i> that are skipped due to ‘<a
+   descendant—that draws the text decoration. However, descendants of the
+   <i>decorating element</i> that are skipped due to ‘<a
    href="#text-decoration-skip"><code
-   class=property>text-decoration-skip</code></a>’ (including elements with
-   ‘<code class=css>text-decoration-skip: ink</code>’) are excluded from
-   consideration.
+   class=property>text-decoration-skip</code></a>’, inline elements with
+   ‘<code class=css>text-decoration-skip: ink</code>’, and any
+   descendants that do not participate in the <i>decorating element</i>’s
+   inline formatting context are excluded from consideration.
 
   <p> The line decoration positions are then calculated as follows (treating
    <a href="#underline-left"><i>over</i>-positioned underlines</a> as

css-text-decor/Overview.src.html

@@ -213,9 +213,10 @@ <h2 id="line-decoration">
     calculation of the decoration's initial position on that line.
     The 'visibility' property, 'text-shadow', filters, and other graphical transformations
     likewise affect text decorations as part of the text they're drawn on,
-    even if the decorations were specified on an ancestor box.
+    even if the decorations were specified on an ancestor box,
+    and do not affect the calculation of their initial positions or thicknesses.
     (In the case of line decorations drawn over an atomic inline
-    or across box decorations, they are similarly associated with the affected box
+    or across box decorations, they are analogously associated with the affected box
     rather than the <i>decorating box</i>.)
 
   <div class="example">
@@ -608,9 +609,6 @@ <h3 id="text-underline-position-property">
       <i>under</i> the element's text content.
       In this case the underline usually does not cross the descenders.
       (This is sometimes called "accounting" underline.)
-      (Note that images that are not affected by the underline per
-      'text-decoration-skip' will not affect the position of the
-      underline.)
       <div class="figure">
         <p><img title="text-underline-position: under"
             alt="In a typical Latin font, the underline is far enough
@@ -692,9 +690,10 @@ <h3 id="line-position">
     the “ideal” positions of such line decorations per fragment
     of the <i>decorating box</i>&mdash;or its in-flow inline descendant&mdash;that
     draws the text decoration.
-    However, descendant fragments of the <i>decorating element</i>
-    that are skipped due to 'text-decoration-skip'
-    (including elements with ''text-decoration-skip: ink'')
+    However, descendants of the <i>decorating element</i>
+    that are skipped due to 'text-decoration-skip',
+    inline elements with ''text-decoration-skip: ink'',
+    and any descendants that do not participate in the <i>decorating element</i>’s inline formatting context
     are excluded from consideration.
 
   <p>