This option allows you to specify how global objects are synchronized across all frames in the editor. If this option is set to "No", the global object is not synchronized with others. If this option is set to "Identical Objects", the objects identical to the current are synchronized with it (this is the old way, which doesn't work sometimes for some objects, especially when they have behaviors). If this option is set to "Same name and type", the global objects with the same name and type as the current object will be synchronized with it. When you create a new object, this option is set to "Same name and type" by default. In old applications, this option is set to "Identical objects" for the existing global objects.