DDoc module description?

[Jeremy DeHaan via Digitalmars-d-learn]

That's ok though. I can live with out it. I'll look through the 
bugzilla site and see if I can find a bug report for this or open 
up a new one.

On a side note, is there any way that I can redefine the DDOC 
macro (or any other macro) once and have it be used for every 
file? That was the only thing I couldn't seem to find in the 
documentation for it.