LayoutIgnoreHTTPHeaderURI

Hi Brian,

I've had a problem for some time with many scripts we have that need to 
do things in the headers (cookies, etc...) not working with mod_layout.

The directive LayoutIgnoreHTTPHeaderURI is not documented, but seems to 
allow the scripts to work as expected, I'm considering turning it on 
globally because it is a pain to do it on a case by case basis and it 
is cluttering my config file.

Very simply: what (if any) is the danger in this? Why does mod_layout 
need to overide the original headers anyway? If mod_layout _needs_ to 
send its headers, why couldn't the behavior be to _add_ to the original 
headers and _not_ replace them?

My questions may ignore or miss things that seem obvious. For that I 
apologize -- but I'm mostly a designer/html jockey - and don't really 
have a deep technical understanding of _how_ mod_layout does what it 
does.

Thanks,

Mark