NewFig:

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   Creates a new figure.
   Sets the default axes font size to 12. Applies the global fontSizeIncrease
   in addition to the 12 pt, if defined. Tags the figure with 'PlotPSS'
   for use with DemoPSS.

   Since version 1.
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   Form:
   h = NewFig( x, varargin )
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   ------
   Inputs
   ------
   x          (:)    Name for the figuref
   varargin   {}     Parameter pairs to pass to figure()

   -------
   Outputs
   -------
   h                 Handle

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