text: New Functionality in Version 4.3
  
  The Optimization interface and solver now support time-dependent optimization and sensitivity analysis. To demonstrate this functionality, a new tutorial model, Time-Dependent Optimization, has been added to the Optimization Module Model Library.
  
  The optimization solvers now allow a choice of forward or adjoint sensitivity in the Gradient method list.
  
  New Model
  
  Time-Dependent Optimization: This tutorial model demonstrates how to compute the periodic steady-state solution of a nonlinear problem using the time-dependent optimization solver.