plus:

Path: Common/@statespace

% Parallel connection of two state space systems.
   The connection is
   [ e ]
   [ f ]
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   Form:
   g = plus( e, f )
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   ------
   Inputs
   ------
   e           (:)   Object of class statespace
   f           (:)   Object of class statespace

   -------
   Outputs
   -------
   g           (:)   Parallel connection

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