Limitations on %include

[Mark Heslep]

Im looking for some documentation on which kickstart commands / options 
can not be used with %include.  For instance,  it appears that the 
install method (-url http://... in my case) is required on the first 
kisckstart scan or at least well before the %pre scripts are executed 
that generate my files picked up by %include.    I'm attempting to pick 
my network installation tree via a command line parameter used with a 
single common kickstart file,  picking it up from /proc/cmdline in %pre 
and then customizing the install url via %include. Apparently  the tree 
is already set at that point.   I assume on consideration that must be 
so since the installer must pick up the stage2 images from the tree to 
continue?

Im starting to wade through kickstart.py but I'd appreciated any 
comments on a) what commands effectively can't be used in %include and 
b) other clean ways to  accomplish the tree customization.

Regards,
Mark