If you have a supported braille display connected to (or in the case of a Bluetooth display, paired with) your computer, VoiceOver automatically detects it and sends it information about what is displayed on the screen. You can connect multiple braille displays to your computer and each display will mirror the same content at the same time, which can be useful in a classroom setting.
By default, VoiceOver displays uncontracted braille. You can set a preference to use contracted braille, in which case VoiceOver dynamically changes the display under the cursor from contracted to uncontracted braille, so that you can read and edit more easily, and then changes back to contracted braille when you move the cursor.
A braille display typically contains more than just the contents of the VoiceOver cursor. It describes the contents of the entire line on which the VoiceOver cursor is focused, including items to the left and right of the VoiceOver cursor. For example, when the VoiceOver cursor is focused on an item in a window, the braille device displays items like icons, checkboxes, and pop-up menus, as well as text that is to theleft and right of the item in the VoiceOver cursor. This collection of items—the VoiceOver cursor and the items to its left and right on the same horizontal line—make up a “line” of braille.
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When you interact with an item in the VoiceOver cursor to get more detail about it, the braille description changes to provide more detail as well. For example, if you move the VoiceOver cursor onto a toolbar, VoiceOver describes only the toolbar on the braille display, because toolbars stretch the entire width of a window. When you interact withthe toolbar, the braille display describes each item in the toolbar from left to right.
Bluetooth is a wireless technology that you can use to connect a keyboard and mouse to your Mac. While WiFi connects the computers and other devices within a home or place of business to create a local-area network, Bluetooth has a much shorter range, about 30 feet. Bluetooth is designed to create a personal network around an individual. See what makes each Mac notebook and desktop different. And find the one that’s perfect for your life, your work, and your budget. (diagonal) LED-backlit display Configurable with nano-texture glass. 27-inch (diagonal) LED-backlit display. Bluetooth 5.0 wireless technology. Apple doesn't make a USB-C to Mini DisplayPort adapter, so you won't be able to connect a 2016 or later MacBook Pro to the Apple Cinema Display, or any other monitor that uses a Mini Display Port. Use the proper dongle or cable. As I said, the easiest way to hook up an external monitor or a TV to your MacBook would be to run an HDMI cable from either a monitor or TV directly to your Mac.
VoiceOver raises dots 7 and 8 to indicate the position of the VoiceOver cursor, to help you locate it within the line of braille. (You can turn off this feature in VoiceOver Utility). Similarly, when you’re editing or selecting text, the text selection is represented by dots 7 and 8. VoiceOver also indicates the position of the text selection cursor, called the “I-beam,” by flashing dot 8 of the braille cell preceding the text selection cursor and dot 7 of the braille cell trailing the text selection cursor.
VoiceOver provides additional information about what’s on the screen using three status cells. Each status cell provides a designated type of information. You can set preferences for the number of status cells you want to use and their location on the braille display. For example, you can choose to use the cell that shows text status and set its location to be on the left of your display.
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VoiceOver detects the type of braille display connected to your computer and sets default preferences appropriate for your display. Use VoiceOver Utility to assign VoiceOver commands to keys on your braille display. You can use the braille display while listening to VoiceOver speak, or you can mute the speech. If your braille display has a Perkins-style keyboard, you can type on it.