Is your feature request related to a problem? Please describe.

In python 2, pressing tab in the python console gives us auto completion for an object. For example, typing nav. followed with tab gives us all the properties on the cached navigator object, including the ones starting with one or two underscores. In python 3 however, these attributes are hidden.

Describe the solution you'd like

I think I like this new approach, but it should be documented as a change in the section of changes for developers.

Describe alternatives you've considered

Restore the python 2 behavior.