MAM30 Enhacement guide

I remember for MAM25 was available a very nice document from Sap titled 'Enhacement Guide ' or something like that, which contained usefull hint about for example how to create own Z* syncbos, or to make appear a new field on the MAM client , or to change the MAM user menu....

It was very complete, including the suggestion to modify the MAM both on the ABAP side and on the Java side.

Unfortunately I'm not able to find this document anymore, and I would like to check also if it's available for MAM30 too.

Where I can find it ?