1 Required to use
<a href=
"http://www.w3.org/TR/pointerlock/">Pointer Lock
</a> via calls to
<code>requestPointerLock
</code> or Pepper's
<a href=
"https://developers.google.com/native-client/peppercpp/classpp_1_1_mouse_lock">Mouse Lock API
</a>. See
<a href=
"api_other">Other APIs
</a> for behavior differences.