''boolean **insertRule** (string **rule name** [, string **after rule name** default null])''This method allows you to programmatically insert a new rule at the end of the rule set; or, optionally, at the beginning of the rule set, or immediately after any specified rule.To insert a rule called "my_rule" at the end of the rule set, just pass the rule name:<code php>

$wiki =& new Text_Wiki();
$wiki->insertRule('my_rule');
</code>To insert the rule at the beginning of the rule set, pass an empty string as the  second parameter:<code php>

$wiki->insertRule('my_rule', '');
</code>To insert the rule in a specific location in the rule set, specify the name of the rule **after** which the new rule should be inserted.<code php>

// Say that the current rule set is ('rule1', 'rule2', 'rule3').

$after_rule = 'rule2';
$wiki->insertRule('my_rule',$after_rule);

// The rule set is now ('rule1', 'rule2', 'my_rule', 'rule3').
</code>