If one could create a visibility parameter for detail items it would have been possible to decide when a specific detail item appears in a view. The applications are numerous and it will enrich the possibility of hosted detail items within families. Another possible way to obtain this high level control is if it were possible to associate detail items with family subcategories. Subcategories are controlled through visibility graphics per view so this will allow for ultimate visibility control. Wouldn't that be nice? and how much 2d correction time could that save!...