A bunch of varied filters and options are available in this module:
Airspace Class filter: A, B, C, D, E, F, G, Danger (DGR), Restricted (R), Prohibited (P), Glider Prohibited (GP), Glider (WW), TSA, TRA, MATZ (MIL). Recreational (RCT), Nature Reserve (NR), FIR. Airspace Altitude filter Airspace Appearance selection.