The simulation object keeps track of the simulation state, and manages its timing.

The simulation state corresponds to one of four enumerated values, which can be accessed as settings.init, settings.op, settings.hold, and settings.end.

Name	Value	Description
init	0	Simulation time is equal to zero, and is not yet progressing. This is the clean state of the simulator.
op	1	The simulation is running, and time is progressing.
hold	2	The simulation is paused, simulation time is non-zero.
end	3	The simulation is ended, and BlueSky is quitting.

Name	Unit	Description
state	-	The current simulation state.
simt	sec	Simulation time
simdt	sec	Simulation timestep
dtmult	-	Simulation timestep multiplier: run sim at n x speed
simtclock	sec	Simulated clock time
ffmode	bool	Flag indicating running at fixed rate or fast time