Dual-head setup

[philn]

Chris Debenham wrote:

> 
> I guess the next step is to see if you can get each head working
> individually.  Ie. edit the ServerLayout section to only refer to
> "Screen 1", test, then change to "Screen 2" and test again.
> That way we can see if it is due to a particular card, or the
> combination of both.
> 
> 

So I just need to change the ServerLayout section - anything in the rest 
of the file will basically be ignored if it is not mentioned there? I 
don't need to remove or comment out anything referring to Screen 1 in 
the body of the file when I'm testing for Screen 2 and vice versa?