Feature Request: Ability to hide children nodes or collapse folders

[adolfo]

Related to this existing feature request:

Insert collapsed nodes programmatically

When developing templates, it can be the case that there exist multiple sequences or hooks that the user needs to interact with and customize. To the best of my knowledge, Polyscope will always insert them expanded, which is undesired. Consider a pick and place example. Ideally, this is what I would like to show upon insertion: Robot program Pick and place <-- Top-level template node Object detection <-- Collapsed sequence nodes Pick Place The above clearly shows the str…