Phobos documentation in source files

[Ary Borenszweig]

I was about to send a post saying "phobos is mostly undocumented", by in 
the digitalmars site the documentation is pretty good for it. I was 
using Descent to see documentation for classes like Object, TypeInfo, 
etc., but in the source files provided with the DMD compiler some of the 
documentation is missing (inline). Is there a reason for this?