I am looking for more information/help about the programmable actions that are available in the Rule-based manipulation of tags. I have seen in forum posts mention of actions such as [GRAB], [RIGHT], [TRIM}, [REPLACE] etc but can find no online documentation that describes their usage and/or other available actions. I would be most grateful if someone can point me to any resource/help that provides comprehensive documentation on the facilities available in the Rule-based manipulation.