/**
@fn FLAG_ALIVE
@section Use
<table>
	<tr>
		<th>Type(s)</th>
		<th>Description</th>
	</tr>	<tr>
		<td>
@ref page_type_62
		</td><td>    Walls with &lt;is destroyable&gt; enabled can be attacked and (eventually)
    destroyed by the player. If disabled, all other attributes on
    this tab, as well as resistances, are meaningless.</td>
	</tr>

*/