Link to diagram from Mongolian scan

Author: fantasai

css3-writing-modes/Overview.html

@@ -2029,7 +2029,9 @@ <h3 id=line-directions><span class=secno>6.3. </span> Line-relative
     direction it does in other East Asian layouts (which have vertical lines
     stacking right to left), but the glyphs' tops are facing the bottom of
     the line stack rather than the top, which in an English paragraph would
-    be upside-down.
+    be upside-down. (See this <a
+    href="diagrams/text-flow-vectors-lr-reverse.svg">Diagram of Mongolian
+    Text Layout</a>.)
   </div>
 
   <p>In addition to a line-relative “top” and “bottom” to map things

css3-writing-modes/Overview.src.html

@@ -1458,7 +1458,9 @@ <h3 id="line-directions">
     same direction it does in other East Asian layouts (which have vertical
     lines stacking right to left), but the glyphs' tops are facing the
     bottom of the line stack rather than the top, which in an English
-    paragraph would be upside-down.
+    paragraph would be upside-down. (See this
+    <a href="diagrams/text-flow-vectors-lr-reverse.svg">Diagram of Mongolian
+    Text Layout</a>.)
   </div>
 
   <p>In addition to a line-relative “top” and “bottom” to map things like