[css-writing-modes] Cleanup left overs

Author: kojiishi

css-writing-modes/Overview.bs

@@ -1178,16 +1178,12 @@ Introduction to Vertical Text Layout</h2>
     The 'text-orientation' property's ''mixed'' and ''upright'' values
     are provided to specify rotation vs. translation of horizontal-only text.
 
-  <p class="note">The ''sideways-left'', ''sideways-right'', and ''sideways''
-    values of 'text-orientation' are provided for decorative layout effects
-    and to work around limitations in CSS support for bottom-to-top scripts.
-
 <h3 id="text-orientation">
 Orienting Text: the 'text-orientation' property</h3>
 
   <pre class='propdef'>
   Name: text-orientation
-  Value: mixed | upright | sideways-right | sideways-left | sideways | use-glyph-orientation
+  Value: mixed | upright | sideways-right | sideways | use-glyph-orientation
   Initial: mixed
   Applies to: all elements except table row groups, rows, column groups, and columns
   Inherited: yes
@@ -1265,11 +1261,6 @@ Orienting Text: the 'text-orientation' property</h3>
             alt="text-orientation: upright"
             src="text-orientation-up.png" width="64" height="160" >
         </td>
-        <td>
-          <img
-            alt="text-orientation: sideways-left"
-            src="text-orientation-sl.png" width="64" height="160" >
-        </td>
         <td>
           <img
             alt="text-orientation: sideways-right"
@@ -1279,7 +1270,6 @@ Orienting Text: the 'text-orientation' property</h3>
       <tr>
         <td>''mixed''</td>
         <td>''upright''</td>
-        <td>''sideways-left''</td>
         <td>''sideways-right''</td>
       </tr>
     </table>
@@ -1354,7 +1344,7 @@ Vertical Typesetting and Font Features</h4>
   </dl>
 
   <p>
-    All text in ''sideways'', ''sideways-right'', and ''sideways-left'' orientations is
+    All text in ''sideways'' and ''sideways-right'' orientations is
     typeset using horizontal font metrics and the normal set of features
     used for horizontal text runs.
     Vertical metrics, vertical glyph variations, and any other features meant
@@ -1372,11 +1362,6 @@ Mixed Vertical Orientations</h4>
     or <a href="#typeset-sideways">typeset it sideways</a> (90&deg; clockwise from horizontal)
     if its orientation property is <code>R</code>.
 
-  <p class="note">
-    Note that UTR50 does not handle inherently bottom-to-top scripts,
-    so they will not be typeset correctly with ''mixed'' orientation.
-    Use ''sideways-left'' for such scripts.
-
   <p class="note">
     The OpenType ''vrt2'' feature, which is intended for mixed-orientation typesetting,
     is not used by CSS.
@@ -1609,27 +1594,20 @@ Line-relative Directions</h3>
   <p>See the <a href="#logical-to-physical">table below</a> for the exact
     mappings between physical and line-relative directions.
 
-  <div class="figure">
+  <div class="figurepair">
+    <div class="figure">
     <a href="diagrams/line-orient-up.svg">
       <img src="diagrams/line-orient-up.png" class="landscape"
         alt="Line orientation compass"></a>
     <p class="caption">Line orientation compass</p>
-  </div>
+    </div>
 
-  <div class="figurepair">
     <div class="figure">
     <a href="diagrams/line-orient-right.svg">
       <img src="diagrams/line-orient-right.png" class="portrait"
         alt="Typical orientation in vertical"></a>
       <p class="caption">Typical orientation in vertical</p>
     </div>
-
-    <div class="figure">
-    <a href="diagrams/line-orient-left.svg">
-      <img src="diagrams/line-orient-left.png" class="portrait"
-        alt="Line orientation with ‘text-orientation: sideways-left’"></a>
-      <p class="caption">Line orientation with ''text-orientation: sideways-left''</p>
-    </div>
   </div>
 
   <div class="note">
@@ -2729,7 +2707,6 @@ Vertical Scripts in Unicode</h2>
 
   <p class="note">
     CSS3 Writing Modes cannot correctly handle either Ogham or Old Turkic.
-    It is recommended that ''text-orientation: sideways-left'' be used to typeset these scripts.
     A future version of CSS may define automatic handling of these scripts.
 
   <p class="note">Note that for vertical-only characters (such as Mongolian and Phags Pa letters),