TimeLabl:

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   Generates a time label given the maximum value of t and rescales t.

   If two arguments are entered it computes the time series t as

   t = (0:(nSim-1))*dT;

   Since version 1.
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   Form:
   [t, c, u] = TimeLabl( t )
   [t, c. u] = TimeLabl( nSim, dT )
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   ------
   Inputs
   ------
   t			 (1,:)  Time (sec)

   or

   nSim         (1,1)  Number of time steps
   dT           (1,1)  Time step (sec)

   -------
   Outputs
   -------
   t			 (1,:) Time
   c			 (1,:) Label (years,days,hours,minutes,seconds)
   u            (1,:) Units of time

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