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== Objective ==  | == Objective ==  | ||
Document how existing FlightGear subsystems (i.e. those inheriting from SGSubsystem) can be exposed to Nasal space to make certain information available to Nasal space.  | Document how existing FlightGear subsystems (i.e. those inheriting from SGSubsystem) can be exposed to Nasal space to make certain information available to Nasal space.  | ||
== Focus ==  | |||
This article will specifically cover how to access the FlightGear event manager (SGEventMgr) and the listener API (SGPropertyChangeListener) to track registration and invocation of Nasal callbacks per frame.  | |||
== Background ==  | == Background ==  | ||