How customized can an mfsroot be?

[Peter Steele]

>What incidentally does /var get populated with? Our image has a custom directory under /var but this did not show up in the MFS versions of this directory. I can get >around this but I wonder what else might not be included?

I found something else that's missing--/var/db/pkg is empty. It looks like what the auto-var process does is a construct basic directory structure but no data. Is there a solution to this? Can I get /var to be populated with the full contents of the real /var?