Introduction of ATC and working Position
From IVAO East Asia Region Wiki
Introduction
ATC Working Positions
Clearance Delivery Controller (CDC)
Ground Movement Controller (GMC)
Aerodrome Movement Controller (AMC)
Zone Controller (ZNC)
Terminal Controller (TMC)
Enroute Executive (EE)
Planner (PLE)
Air Traffic Management (ATM) and scopes
Divisions of Airspace