Restrictions on Model Navigator Display Elements

The Next Design model navigator is important structural information in design tools.
First, let's think about what should be displayed in the model navigator.
As a general rule, it is a good idea to make it a semantic definition unit in the target design in Next Design.
For example, use cases, actors, layers, components, functions, variables, properties, etc. are units to be displayed in the navigator, but
function parameters, return values, etc. should not be elements of the navigator.

Supplementary information

You can set the model not to be displayed in the model navigator by unchecking "Show in model navigator" in the inspector.