what is selective desolidification and how does it work?

[dsatow]

In the index it says 6e1 pg 192. I go to page 192 which is about desolidification but I don't see the advantage explained. I am assuming you can partially desolidify your body with the advantage. How does that affect Area of Effect attacks, falls, the ability to eat, hit locations/damage, etc.? If an NND hits a solid area and the defense is being desolid (twiddly I know but its for the purposes of the argument), does the NND affect the target?

[Steve Long]

You can find that Advantage in the APG.