Patchwork lets you construct your app by combining various elements into a working whole. By adding views and connecting them to datasets and navigation, you can define all aspects of how your app behaves.
App behavior, logic and navigation builder.
Patchwork is perhaps the most important tool in Appspotr 3. It is used to create the core of the application - the behavior.
You can use click-and-drag to move the patches to a desired location. This can be used to organize the layout, but does not affect the functionality of the app.
Also, using click-and-drag on the Patchwork's view, you can navigate within large patchworks.