e default value for this field is <code>true</code>.
	</dd>
	
	<dt><code><b>metakey</b></code></dt>
	<dd>
		Special value used to identify a meta-table retrieval.
		See method <code>error</code> for further information.
	</dd>
	
	<dt><code><b>metatable</b></code></dt>
	<dd>
		Field that defines the method implementation used to compare meta-tables of matching values passed as parameters.
		The function must return <code>true</code> if the values match or <code>false</code> otherwise.
		If this field evaluat