Where can I find a documentation of the keys for TransactionTexts (ax40, dk)

Hi.

I would like to add some informations to the transactions texts in my Ax 4. At the form, it is mentioned, what the keys %1 to %3 means. But the content of the optional keys 4 to 6 is not described. I think, that it is possible for me to define them somerwhere - but where ?

Med venlig hilsen

Peter