Grid_plot_series() method provides an easy way to visualize the family of the model curves that are generated when varying a specific parameter on a grid. NOTE: this family of curves is generated by keeping the other parameters constants. This is different from family of solutions you obtain from grid search if other parameters are set to be adjustable! Grid_plot_series() shows you your starting conditions for all grid points.
The parameter 'accept_better_parameter' set to 'accept' will result in the grid value that produced better SS than existing parameter set be accepted as a new current values of the parameter. This way you may do 'manual fitting' by evaluating a series of grids on a number of parameters.
For a specific usage see TotalFit.m