Where can I find the "aircraft home" also called "standard flight simulator center point" in the SDK manual ?

I just know it is NOT the the reference_datum_position (see http://msdn.microsoft.com/en-us/library/cc526949.aspx#mozTocId243173)

the reference_datum_position is given in the aircaft.cfg. The aircraft home or standard center point can't be found in the aircaft.cfg

Would be fine to know where to find it