VFBS: Screen control - Is there SAP documentation available and where?


I am looking for documentation on this transaction. Does anybody know where to find it?

We are upgrading from 46C to ECC 6.0 and there I had the problem that a custom button was added to a standard SAP screen. This button no longer worked. I figured uit that I needed VFBS, and managed to get it working again by creating the entries in the three tables (T185F, T185 and T185V).

Now I am trying to find out how to use it if I wanted to do the same myself (from scratch).

I searched SDN, and the Library. Even the ultimate Google... Nowhere can I find proper documentation on this transaction.

Is there standard SAP documentation available and if so, where?

Thanks in advance!