skirts in mod class question

[Doug Miller <drmiller@intcc.com>]

hey,
the rule book says on page 134:
"The sealing of the chassis/body to the ground with skirts is prohibited."

I read this that skirts aren't illegal, as long as they don't SEAL.
So I can run skirts as long as there is a gap at the bottom.  ????
Am I reading this the same way as everyone else?

Also, what is a "skirt"????? I'm assuming it is a vertical piece of 
something that extends from the body/chassis downwards towards the 
ground.  ??????????

thanks very much,
Doug Miller