Support rectangular areas

[dehmer]

• G*F*ACAR--: Airspace Coordination Area (ACA)
• G*F*ACBR--: Target Build-up Area (TBA)
• G*F*ACDR--: Dead Space Area (DA)
• G*F*ACER--: Sensor Zone
• G*F*ACFR--: Free Fire Area (FFA)
• G*F*ACNR--: No Fire Area (NFA)
• G*F*ACPR--: Position Area For Artillery (PAA)
• G*F*ACRR--: Restrictive Fire Area (RFA)
• G*F*ACSR--: Fire Support Area (FSA)
• G*F*ACVR--: Target Value Area (TVAR)
• G*F*ACZR--: Zone of Responsibility (ZOR)
• G*F*AKBR--: Blue Kill Box (BKB)
• G*F*AKPR--: Purple Kill Box (PKB)
• G*F*ATR---: Rectangular Target
• G*F*AZCR--: Censor Zone
• G*F*AZFR--: Critical Friendly Zone (CFZ)
• G*F*AZIR--: Artillery Target Intelligence (ATI) Zone
• G*F*AZXR--: Call For Fire Zone (CFFZ)