Definitions

alternate tabs app bar The alternate tabs app bar is used when the user has pinned the tab app bar (and the navigation app bar too). This tabs app bar has Australis-style tabs that don't contain thumbnail tiles.
app bar Outside of the app page, the app bar is the primary command interface for your app. Use the app bar to present navigation, commands, and tools to users. The app bar is hidden by default and appears when users swipe a finger from the top or bottom edge of the screen. It covers the content of the app and can be dismissed by the user with an edge swipe, or by interacting with the app. The app bar can also appear programmatically on object selection or on right click. The app bar is transient, going away after the user taps a command, taps the app canvas, or repeats the swipe gesture. If needed, you can keep the app bar visible to ease multi-select scenarios. http://msdn.microsoft.com/en-us/library/windows/apps/hh465302.aspx
auto-complete screen The auto-complete screen is the tile-base auto-complete list that is associated with text entry in the navigation app bar. This screen includes a tile group for auto-complete site matching and a tile group for searching.
Awesome screen The Awesome screen is a launch point for users which shows up on Metro Firefox launch and when the user creates a new tab. The Awesome screen contains several tile groups including the Top Sites tile group , the Bookmarks tile group, and the History tile group.
Bookmarks screen The Bookmarks screen is Firefox's interface for viewing and managing all bookmarks. It is accessed by tapping on the header of the Awesome screen's Bookmarks tile group.
Bookmarks tile group The Bookmarks tile group is a tile group appearing in the middle of the Awesome screen which contains a list of recently bookmarked pages.
charms Charms are buttons that represent the most commonly accessed Windows contracts, including Search, Share, Devices, and Settings. Charms are located in the charms bar.
charms bar The charms bar is a Windows toolbar accessible by swiping in from the right side of the screen on Windows it. The charms bar contains buttons for the most common Windows contracts as well as a Windows Start button.
context app bar The context app bar is the app bar located at the bottom of the screen. It includes buttons for features that are specific to the context of the currently loaded page.
context menu You can use context menus for clipboard actions (like cut, copy, and paste), or for commands that apply to content that cannot be selected (like an image on a web page). http://msdn.microsoft.com/en-us/library/windows/apps/hh465308.aspx
desktop Firefox desktop Firefox is the Firefox browser that runs on Windows XP, Windows Vista, Windows 7, and the desktop half of Windows 8.
downloads app bar The downloads app bar appears during the initiation of a file download and allows the user to specific actions related to the download as well as providing the user with progress indicators
entry point "Entry points are text that appear at the top of the Settings pane and generally open settings Flyouts, where you can display one or more settings options."
fill view When in fill view, your app is the primary experience and the snapped view app is the secondary experience. snapped view and fill view are only available on displays with a horizontal resolution of 1366 relative pixels or greater. This is because the snapped view is 320 pixels wide, and can be placed on either side of the screen. The remaining 1046 pixels are allocated to the splitter (22 pixels) and the fill view, which must always have a horizontal resolution of 1024 relative pixels or greater. http://msdn.microsoft.com/en-us/library/windows/apps/hh465371.aspx
find app bar The find app bar is the toolbar which helps users find text in a page. It is accessed from the context app bar.
Flyout Flyouts are great at showing UI that you don't want on the screen all the time. The user can close a Flyout at any time by simply tapping or clicking outside of it, or by pressing ESC. If users are in control of bringing up new UI, they must also be in control of dismissing it. When the user makes a selection in the Flyout, the Flyout should be dismissed. http://msdn.microsoft.com/en-us/library/windows/apps/hh465341.aspx
full screen view In full screen view, the default view for Metro-style apps, your app is the only one visible to the user. Other views include fill view and snapped view. http://msdn.microsoft.com/en-us/library/windows/apps/hh465371.aspx
History screen The History screen is Firefox's interface for viewing and managing the browser's history. It is accessed by tapping on the header of the Awesome screen's History tile group.
History tile group The History tile group is a tile group located on the right side of the Awesome screen which provides quick access to recently visited sites.
landscape view Metro-style apps can support two device orientation views, landscape and portrait. Landscape view is the default view for Metro-style apps and accommodates notebooks, slates, and desktop PCs.
message dialog A message dialog is an explicitly dismissed surface available to app developers to elicit an immediate response from the user. These dialogs dim the screen behind them and block touch events from passing to the app's canvas until the user responds. A message dialog uses text and buttons, specified by the app developer, to do one of the following: Convey urgent information, Present an error message, or Ask a question that the user must answer to eliminate a blocking of the core flow of an application. A message dialog can be in response to user action, or prompted by the app based on the state of the app. Message dialogs should be used thoughtfully and sparingly, and only if the message to be conveyed is critical at that moment for the app.
Metro Firefox Metro Firefox is the touch optimized Firefox browser designed for the tablet UI of the Windows 8 Metro environment.
MSEDB Metro Style Desktop Enabled Browser, Microsoft's name for the hybrid app browsers which install as desktop programs but can create a Metro app.
navigation app bar The navigation app bar is one of two app bars available at the top of the screen. The navigation app bar contains a text field for address and search term entry, back, forward, stop, and reload buttons.
navigation progress indicator The navigation progress indicator is the visual indicator of website loading activity. It is a three pixel tall orange line that animates from left to right on the bottom edge of the navigation app bar.
Options screen The Options screen is where Firefox users manage their most important Firefox settings. It is accessed from the Options link in the Settings pane.
OSK OSK is short for on screen keyboard.
pane A pane is a light-dismiss Flyout that comes out of the right side of the screen and takes up the full vertical height of the screen.
portrait view Metro-style apps can support two device orientation views, landscape and portrait. Portrait view is primarily for slates and desktop PCs and does not work well for notebooks.
search pane Users can search your app's content, from anywhere in their system, through the Search charm which brings in the search pane.
secondary tile Secondary tiles enable users to promote specific content and deep links-a reference to a specific location inside of the pinning app-from Windows Store app apps onto the Start screen. The most common implementation of secondary tile is "Pin to Start". http://msdn.microsoft.com/en-us/library/windows/apps/hh465372.aspx http://msdn.microsoft.com/en-us/library/windows/apps/hh465398.aspx
semantic zoom Semantic Zoom is a touch-optimized technique used by Windows Store apps in Windows 8 for presenting and navigating large sets of related data or content within a single view (such as a photo album, app list, or address book). http://msdn.microsoft.com/en-us/library/windows/apps/hh465319.aspx
Settings pane Windows provides a Settings pane via the Settings charm in the Charms bar. The Settings pane contains App specific settings at the top and common Windows settings at the bottom.
snapped view When in snapped view, your app is the secondary experience and the fill view app is the primary experience. snapped view and fill view are only available on displays with a horizontal resolution of 1366 relative pixels or greater. This is because the snapped view is 320 pixels wide, and can be placed on either side of the screen. The remaining 1046 pixels are allocated to the splitter (22 pixels) and the fill view, which must always have a horizontal resolution of 1024 relative pixels or greater. http://msdn.microsoft.com/en-us/library/windows/apps/hh465371.aspx
standard toast Most developers should use the standard toast notification. This toast remains on the screen for seven seconds, playing a brief sound to alert the user when it appears. The standard toast is best for notifications such as an IM contact sign-in, or a social media update. There is also a long-duration toast notification that looks the same as a standard toast but stays on the screen for 25 seconds and optionally can play longer, looping audio. This type of toast is used in situations where you want to grab the user's attention because there is a human waiting on the other end of the connection. This is appropriate for person-to-person communication like instant messages and VOIP calls. This type of toast can also be used for calendar reminders.
tabs app bar The tabs app bar is the app bar at the top of the screen that contains thumbnail tiles for each open tab. It also contains the button for creating new tiles and the scrolling widgetry that allows for tile overflow beyond the screen edges.
Taskbar The Windows 8 Taskbar replaced the Start menu as the primary location for Windows 8 desktop app shortcuts. The Windows 8 Desktop remains a secondary shortcut location.
thumbnail tile A thumbnail tile is a tile with the image of a website as its background.
tile A tile is a rectangle or square launcher with a solid background color. http://msdn.microsoft.com/en-us/library/windows/apps/hh779724.aspx
tile group A tile group is a section of the canvas that contains a group of tiles which can be arranged only within that section.
Top Sites tile group The Top Sites tile group is a group of thumbnail tiles on the left side of the Awesome screen which offers users quick access to their most frequently and most recently visited sites.
Windows All Apps screen The Windows All apps screen is a list of all of your apps.
Windows contracts A contract is like an agreement between one or more apps. Contracts define the requirements that apps must meet to participate in these unique Windows interactions. An extension is like an agreement between an app and Windows. Extensions lets app developers extend or customize standard Windows features primarily for use in their apps and potentially for use in other apps. http://msdn.microsoft.com/en-us/library/windows/apps/hh464906.aspx
Windows standard gesture Tap, Press and hold, Slide, Swipe, Turn, Pinch, and Stretch http://msdn.microsoft.com/en-us/library/windows/apps/hh465415.aspx
Windows Start screen The Windows Start screen is the Metro user's desktop, taskbar, start menu, and sidebar all re-mixed for touch, tablets in particular.