Scenecry.cfg

1.-Can anyone tells me what the following with
in Scenery.cfg mean:
[Area.021]
Title=Kitty Hawk Aerial Photo
Layer=21
Active=TRUE ----------------------------------
Required=FALSE ----------------------------
Local=Scenery\Cities\Kittyhwk
Remote -----------------------------------------
2.- I have been told that I can use a "Switch" in Scenery.cfg, to "FLATTEN an Area after using AFCAD2, ( new airport location, for exemple.) Can anyone tell me how to activate this " Switch"
Thanks,
Bob

[Area.021]
Title=Kitty Hawk Aerial Photo
Layer=21
Active=TRUE ----------------------------------

Required=FALSE ----------------------------

Local=Scenery\Cities\Kittyhwk
Remote -----------------------------------------

2.- I have been told that I can use a "Switch" in Scenery.cfg, to "FLATTEN an Area after using AFCAD2, ( new airport location, for exemple.) Can anyone tell me how to activate this " Switch"
Thanks,
Bob