--- a/touchevents.html	Mon Oct 10 13:58:47 2011 -0400
+++ b/touchevents.html	Thu Oct 13 02:13:50 2011 +0900
@@ -171,33 +171,33 @@
 
         <dt>readonly attribute long screenX</dt>
         <dd>
-          x-coordinate of point relative to the screen
+          The horizontal coordinate of point relative to the screen in pixels
         </dd>
         <dt>readonly attribute long screenY</dt>
         <dd>
-          y-coordinate of point relative to the screen
+          The vertical coordinate of point relative to the screen in pixels
         </dd>
 
         <dt>readonly attribute long clientX</dt>
         <dd>
-          x-coordinate of point relative to the viewport, excluding any scroll
-          offset
+          The horizontal coordinate of point relative to the viewport in pixels,
+          excluding any scroll offset
         </dd>
         <dt>readonly attribute long clientY</dt>
         <dd>
-          y-coordinate of point relative to the viewport, excluding any scroll
-          offset
+          The vertical coordinate of point relative to the viewport in pixels,
+          excluding any scroll offset
         </dd>
 
         <dt>readonly attribute long pageX</dt>
         <dd>
-          x-coordinate of point relative to the viewport, including any scroll
-          offset
+          The horizontal coordinate of point relative to the viewport in pixels,
+          including any scroll offset
         </dd>
         <dt>readonly attribute long pageY</dt>
         <dd>
-          y-coordinate of point relative to the viewport, including any scroll
-          offset
+          The vertical coordinate of point relative to the viewport in pixels,
+          including any scroll offset
         </dd>
       </dl>
     </section>