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kotlinlang

Have a few questions after doing some more work last night.

1. What is the best way to replace a view (that is not the main view of the scene)? If you have a sidebar where you can select different views and you show the view to the right? I found this piece, which works, but just wondering if there is a different way, or should I build a view around this to control the active view that is displayed?
   `find(ManageCategoriesView::class).replaceWith(ManageAccountsView::class, sizeToScene = true, centerOnScreen = true)`

2. Is there a short hand for creating box in css? I often just need right padding... `box(0.px, 10.px, 0.px, 0.px)` Or color on 1 edge of a border `box(Color.Transparent, Color.Transparent, c("#333333"), Color.Transparent)`

3. What is the lifetime of a ViewModel? What is the lifetime of a Controller? Do they exist forever as soon as they are injected at least one time? Can you be guaranteed that they will exist and keep state if you move to a view that doesn't use the ViewModel or Controller?