mphnavigator opens the Model Object Navigator which is a graphical user interface that can be used to navigate the model object and to view the properties and methods of the nodes in the model tree.
mphnavigator(model) opens the model object defined with the name
model in Model Object Navigator window.
open the model COMSOL_Multiphysics/Diffusion/effective_diffusivity from the COMSOL Multiphysics Application Library and set the model object with the variable
eff_diff: