design documents?

[Ross Boylan]

On Sat, 2008-03-29 at 11:40 -0400, Derek Atkins wrote:
> I'm afraid that really there are no good design docs.  Certainly
> nothing coherent.  Many times there are email discussions when a
> feature is being created, but nothing really gets put down for
> posterity in the source tree.  Unfortunately I have to say the
> the design doc is the source code.
> 
> -derek
Could anyone point me to where I can start to understand the log file
format?  As I said, my main interest is in effecting a repair, possibly
by using excerpts from a previous log file.

It looks as if the documentation has moved mostly to doxygen, and I've
discovered http://svn.gnucash.org/docs/HEAD/index.html.  However, the
discussion of backup says "The actual file writing is done by
xaccWriteAccountGroupFile() in in src/engine/FileIOP.hv" and that file
doesn't seem to exist (nor does a search on doxygen turn up the
function).