[no subject]

do readdata.do
do clean.do
do dataprep.do
do analysis.do

I you only log witin the analysis.do file, you should get closer to
what you want. Anyhow, splitting the files up like this will make them
much easier to maintain, while makeing a master do-file, makes them as
easy to run as putting all the commands in one do-file.

Hope this helps,
Maarten