The Revit Family App lets you create custom Revit Window Families by nesting smart window specific elements in its visual editor. Depending on the complexity of the window, that might result in a list of elements that are nested multiple levels deep.
We have added the following editor improvements to make it easier to work with those nested groups of elements.
Highlight nested groups
When you select an element, it highlights all elements that are nested within the selected element with a gentle gradient.
Fold nested groups
Another super handy improvement is the ability to fold element groups, which is especially helpful when you move around nested groups as I was showing in this last screencast