_enter() function of a feature, if it has one.</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#feature:enter">feature:enter (enterer, fromX, fromY)</a></td>
	<td class="summary">Calls the enter() function of a feature, if it has one.</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#feature:push">feature:push (pusher)</a></td>
	<td class="summary">Pushes a feature, if it's pushable.</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#feature:moveTo">feature:moveTo (x, y, noTween)</a></td>
	<td clas