[css-logical-props] Catch up commit: table captions and map key issue.

Author: fantasai

css-logical-props/Overview.bs

@@ -109,16 +109,15 @@ Logical Values for the 'caption-side' Property</h3>
 
   <pre class="propdef partial">
     Name: caption-side
-    New values: block-start | block-end | inline-start | inline-end
+    New values: inline-start | inline-end
   </pre>
 
-  Note: The 'caption-side' property is 1-dimensional in CSS2.1,
-  but was 2-dimensional in CSS2.0,
-  (and presumably will be 2-dimensional again in a future update to CSS tables).
-  It therefore accepts the full set of flow-relative directions.
-  However, the ''caption/inline-start'' and ''caption/inline-end'' values
-  (which correspond to the behavior of the ''caption-side/left'' and ''caption-side/right'' values in CSS2.0)
-  are only required to be supported by UAs that support ''caption-side/left'' and ''caption-side/right''.
+  These two values are added only for implementations that support
+  ''caption-side/left'' and ''caption-side/right'' values for 'caption-side'.
+  The existing ''caption/top'' and ''caption/bottom'' values are idiosyncratically redefined
+  as assigning to the <a>block-start</a> and <a>block-end</a> sides of the table, respectively.
+  The mapping on this property uses the <a>writing mode</a> of the element’s <a>containing block</a>
+  (that is, the table wrapper box).
 
 <h3 id="float-clear">
 Flow-Relative Values for the 'float' and 'clear' Properties</h3>
@@ -128,6 +127,8 @@ Flow-Relative Values for the 'float' and 'clear' Properties</h3>
     New values: inline-start | inline-end
   </pre>
 
+  The mapping on this property uses the <a>writing mode</a> of the element’s <a>containing block</a>.
+
   Note: These properties are 1-dimensional in CSS2,
   but are planned to be expanded to two dimensions,
   and therefore are given unabbreviated <a>flow-relative</a> keywords.
@@ -211,9 +212,12 @@ Flow-Relative Box Model Properties</h2>
   Which pairs of properties share computed values
   depends on the element’s computed values of
   'writing-mode', 'direction', and 'text-orientation'.
-  For a table of these dependencies, see
-  <a href="https://drafts.csswg.org/css-writing-modes/#logical-to-physical">Abstract-to-Physical Mappings</a>
-  in [[!CSS3-WRITING-MODES]].
+
+  Issue: Depending on the element’s own writing mode
+  simplifies the cascading calculations
+  and gives a straightforward model for authors to reason about.
+  However, it is problematic in many cases,
+  see for example <a href="https://www.w3.org/mid/20161108202634.GA7235@mail.internode.on.net">this discussiona</a>.
 
   A computed value that has flow-relative and physical properties as input
   is determined by applying the CSS cascade to declarations of both.
@@ -594,3 +598,16 @@ Border Image Transform: The 'border-image-transform' property</h3>
     <li>'border-image-repeat'
     <li>'border-image'
   </ul>
+
+<h2 id="changes">
+Changes</h2>
+
+  Changes since the last Working Draft include:
+  <ul>
+    <li>Making all properties cascade using the <a>writing mode</a> specified on the element, not on its parent.
+    <li>Making the ordering of longhands within 'margin'-like shorthands put inline-start before inline-end.
+    <li>Renaming the <css>outset-*</css> properties to 'inset-*' and marking an issue for discussion.
+    <li>Adding an Introduction section.
+    <li>Updating to current terminology of CSS Writing Modes.
+    <li>Miscellaneous prose cleanup.
+  </ul>