**WinUI 3** projects created with *Template Studio* (aka *TS*) are intended as a starting point, and will require modification and extension before they're finished. This page explains common ways to extend what is generated for you.
The final generated code is the result of a project configuration (project type and design pattern) and a multiple template choice (pages and features). There are a few concepts to understand before start working on the generated code.
*Template Studio* approaches **WinUI 3** Desktop app creation using the following attribute sets to decide how to best generate your app. Below are descriptions of everything you can do.
| [Blank](./projectTypes/blank.md) | It provides folder scaffolding creating the most important folders as Services, Styles, Views and ViewModels. It also provides a minimal set of styles, font sizes, and thickness values that you can use to build your app styles. This project type also includes basic services for activation and navigation. On application startup, the navigation to the home page is performed with these services. |
| [Navigation Pane](./projectTypes/navigationpane.md) | This project includes a navigation pane (or 'hamburger menu') at the side of the screen, for navigation between pages. This style is popular in mobile apps but also works well on larger screens. The menu can be hidden when space is limited, or it isn't needed. The menu shows items with an icon and text. The menu can be entirely hidden, show just the icon, or show the icon and text. The user can choose to display the full menu at the touch of a button. The menu also adapts automatically to the size of the screen. |
| [MenuBar](./projectTypes/menubar.md) | The project includes a menu bar on top of the screen that gives access to the pages of the application. Menu Bars are used a lot in desktop applications like Outlook, Word or Visual Studio. The menu initially shows two entries, File and Views. Pages are added to the Views menu entry, Settings Page to the file entry. Once the project is created you can redistribute or create new menu entries as convenient. |
**App Design patterns** define the coding pattern that will be used across the project, tying your UI and code together. *Template Studio* currently supports the following common patterns:
| [MVVM Toolkit](./frameworks/mvvmtoolkit.md) | The [CommunityToolkit.Mvvm package](https://aka.ms/mvvmtoolkit) is a modern, fast, and modular MVVM library. It is part of the Windows Community Toolkit. |
- [Windows App SDK (previously known as Project Reunion)](https://docs.microsoft.com/en-us/windows/apps/windows-app-sdk/)
- [Windows App SDK on GitHub](https://github.com/microsoft/WindowsAppSDK)
- [Update existing projects to the latest release of the Windows App SDK](https://docs.microsoft.com/en-us/windows/apps/windows-app-sdk/update-existing-projects-to-the-latest-release)
