Area ID Description UI and Graphics VX-U1 The app supports both landscape and portrait orientations (if possible). Orientations expose largely the same features and actions and preserve functional parity. Minor changes in content or views are acceptable. VX-U2 The app uses the whole screen in both orientations and does not letterbox to account for orientation changes. Minor letterboxing to compensate for small variations in screen geometry is acceptable. VX-U3 The app correctly handles rapid transitions between display orientations without rendering problems or losing state.

Area ID Description Multi-Window and Multi-Resume LS-M1 The app must be available to be used in Multi-Window mode. Learn how. LS-M2 The app must update the UI (continue playing video, update with new messages, update download progress, etc) when it's not the top focused application for the user. This also includes handling the loss of exclusive resources such as camera and microphone in multi-window scenarios. Continuity and Configuration Changes LS-C1 The app must handle configuration changes and retain or restore state as the device goes through configuration changes such as folding/unfolding, window resizing, or rotation. LS-C2 The app handles combinations and chains of configuration changes, such as window resizing followed by device rotation, or device rotation followed by folding/unfolding. Improved App UX for Tablet, Desktop layouts LS-U1 The app supports both portrait and landscape orientations LS-U2 The app should have layouts appropriate for the larger screens. Learn how. LS-U3 Modals, options menus, and other secondary elements should be formatted well on all screen types and states Touch target minimum sizes LS-T1 Touch targets should be at least 48dp. Learn how. Input Support - keyboard, mouse, touch input, trackpad LS-I1 Main user flows should support keyboard navigation, including arrow keys and tab navigation LS-I2 Support keyboard shortcuts for text selection, cut/copy/paste, and undo/redo. Learn how. LS-I3 The app plays/pauses multimedia playback when the spacebar key is pressed LS-I4 Apps should support basic mouse/trackpad support, including scrolling and right-click handling

Area ID Description Multi-Instance LS-M3 If the app launches other tasks, it should support multi-instance. Learn how. Foldable posture layouts and interactions LS-F1 When running on a foldable device, the app is usable while in tent mode and, if applicable, provides a user experience optimized for the device state LS-F2 When running on a foldable device, the app is usable while in tabletop mode and, if applicable, provides a user experience optimized for the device state LS-F3 When running on a foldable device, the app is usable while in book mode and, if applicable, provides a user experience optimized for the device state LS-F4 If the app is a camera app, it supports Dual Display (front and back screen) preview Advanced desktop layouts LS-U4 The app includes layouts with at least one breakpoint in the 1300-1600dp window width range. Learn how. Drag and drop functionality LS-D1 Build natural drag and drop for both images and text. Learn how. Stylus support LS-S1 If the app handles free-form user input, it handles stylus input devices including different tool types and palm rejection. Learn how. LS-S2 If applicable, the app handles advanced stylus input events including pressure sensitivity and tilt detection Enhanced keyboard support LS-I5 The app supports the use of keyboard modifiers, such as shift + click to select ranges of items LS-I6 The app supports multi-selection with keyboard meta keys (ctrl and shift keys) and tap / trackpad / mouse click for selectable lists of items Enhanced input support- mouse and trackpad LS-I7 The app displays a scrollbar while the content is being scrolled LS-I8 When the app indicates there's more content in a view than the user can see at once and a mouse or trackpad is available, the user should be able to reveal the additional material by scrolling with the input device rather than forcing a touch screen gesture. LS-I9 The app uses desktop-style menus and contextual menus, when applicable LS-I10 The app uses UI panels that are resizable with mouse, when applicable LS-I11 When some of the content is partially hidden, extra buttons or controls are revealed on mouse hover LS-I12 The app supports triple tapping on a mouse or trackpad Custom cursors for mouse LS-P1 Apps should customize cursors to show which UI elements are active and how to use them. Learn how.