> Thanks for pointing out this error. The "All Bank Size" contains the size of all banks including their 
> bank headers, but NOT the global bank header itself. I modified the documentation accordingly.
> 
> If you want to study the C code which tells you how to fill these headers, look at midas.cxx line 
> 14788.

Also take a look at the midas event parser in ROOTANA midasio.cxx, the code is pretty clean c++
https://bitbucket.org/tmidas/rootana/src/master/libMidasInterface/midasio.cxx

But Stefan's code in midas.cxx and in the documentation is the authoritative information.

K.O.