/*
Wiki2LaTeX now uses common hooks as implemented in Mediawiki. 
The function is registered by this command in your w2lConfig.php
or by setting the hooks in the file of the function.

$wgHooks['w2lFinish'][] = 'MyHookFunction';

*/

function MyHookFunction( &parser, &$str ) {
	$str = str_replace('this', 'that', $str);
	return true;
}