Specify value of 1 for mouse events

index.html

@@ -329,7 +329,7 @@ <h2><code>PointerEvent</code> interface</h2>
                         </dd>
                     <dt><dfn>deviceId</dfn></dt>
                         <dd>
-                            <p>A unique identifier for the device that generates the pointer event. Pointer events generated from the same physical device will have the same <code>deviceId</code> for the browsing session. User agents MAY reserve a generic <code>deviceId</code> value of <code>0</code> or <code>1</code> for events generated by the primary mouse device. The <code>deviceId</code> value of <code>-1</code> MUST be reserved and used to indicate events whose generating device could not be identified.</p>
+                            <p>A unique identifier for the device that generates the pointer event. Pointer events generated from the same physical device will have the same <code>deviceId</code> for the browsing session. A generic <code>deviceId</code> value of <code>1</code> MUST be reserved for events generated by the primary mouse device. The <code>deviceId</code> value of <code>-1</code> MUST be reserved and used to indicate events whose generating device could not be identified.</p>
                         </dd>
                     <dt><dfn>getCoalescedEvents()</dfn></dt>
                         <dd>