====== Accessibility ====== ===== Assistive Technologies =====
{{:xfce:xfce4-settings:4.12:xfce4-settings-accessibility-at.png?nolink&|}}
? Enable Assistive Technologies ! When {gui>Assistive Technologies} is enabled, the Xfce desktop is enabled, xfce4-session will load the required modules so the toolkit (Gtk) can communicate with [[http://live.gnome.org/Orca|Orca]], the suite of utilities for the visually impaired. ===== Keyboard =====
{{:xfce:xfce4-settings:4.12:xfce4-settings-accessibility-keyboard.png?nolink&|}}
These settings are here to help people with certain disabilities get the most out of their keyboards. === Sticky Keys === When Sticky Keys are active, you can press key combinations in sequence instead of at the same time. For instance, {key>Ctrl} followed by {key>C} (instead of {key>Ctrl-C}) will copy selected text. === Slow Keys === When Slow Keys are active, the keyboard won't register a keystroke until you hold the key down for a certain length of time. The default time is 500 milliseconds, or half a second. You can move the slider with the mouse to adjust the length of time. === Bounce Keys === When Bounce Keys are active, the keyboard won't accept a keystroke until there has been a certain interval of time since the previous keystroke. The default interval is 500 milliseconds. You can move the slider with the mouse to adjust the length of time. ===== Mouse =====
{{:xfce:xfce4-settings:4.12:xfce4-settings-accessibility-mouse.png?nolink&|}}
Mouse Emulation lets you move the mouse pointer with the arrow keys on the numeric keypad. As seen in the above screenshot, the values that can be set are: * Acceleration delay (in milliseconds) * Repeat interval (in milliseconds) * Acceleration time (in milliseconds) * Maximum speed (in pixels per second) * Acceleration profile (Acceleration profiles are mathematical formulas. [[http://www.x.org/wiki/Development/Documentation/PointerAcceleration#Acceleration_profiles_.28for_the_inclined_programmer.29|The X.org wiki]] says: "Acceleration profiles translate device velocity into an acceleration to be imposed on the pointer.") The Mouse Emulation module is included primarily to help people who cannot use a standard mouse. There are no optimal settings; you will need to experiment to find which settings work the best for you.