BAPI_OBJCL_ExistenceCheck and others, where to find doc?

Hi,

one day, I was looking for doc about document management and I found a pdf file with an example of all the possible BAPI like Document.Change Document.Checkin and so on.

I'm looking for the same thing but for for BAPI that deals with objects as

BAPI_OBJCL_ExistenceCheck, BAPI_OBJCL_GETDETAIL ...

Do you now where I can find such a document ?

Kind regards,

morgan