I have two questions about AppMap:
1- After designing the app architecture (pages & relations), is it possible to print or to generate a PDF file of the app layout? That would be very useful for documentation and later programming task.
2- After the application is generated, is there any way to move back to AppMap to modify the app architecture? It would be useful to add new pages/relations when application are developed in phases or iterations.
1 - This is currently not possible, but a great idea. You should add this suggestion to our Product Ideas website so we can track your request (http://ideas.infragistics.com/forums/268167-xamarin-forms).
2 - No. The AppMap is a one-way code generation tool. You can however add an AppMap to an existing project by right clicking your project and selecting to add a "New Item". Find the Infragistics/ Xamarin.Form category in the File -> New dialog and select the AppMap item. You can then create new views to be added to your project.