Step:

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   Generate a step response of a state space system. 
   If no outputs are given it will plot.
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   Form:
   [y,x,t] = Step( g, iU, dT, nSim, inputType, statesFlag )
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   ------
   Inputs
   ------
   g                      State space system of type statespace
   iU           (n)       Input* optional, defaults to all
   dT           (1)       Time step*
   nSim         (1)       Number of steps*
   inputType    (:)       'step', 'impulse', 'white noise'* optional,
                             defaults to a step response.
   statesFlag   (1)       Flag for plotting the states, optional.

   -------
   Outputs
   -------
   y           (p,m)      Step response
   x           (n,m)      States
   t           (1,m)      Time vector

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Children:

Common: Control/C2DZOH
Common: Control/S2Damp
Common: Graphics/Plot2D
Common: Graphics/TimeLabl