This chapter describes how to use the Accessibility preference tools to customize your desktop environment. You can open an Accessibility preference tool in the following ways: From the Desktop Preferences menu Choose ApplicationsDesktop PreferencesAccessibility. Choose the preference tool that you require from the submenu. The dialog for the tool is displayed. From the Start Here location Open a Nautilus file manager window, then choose GoStart Here. Alternatively, double-click on the Start Here object on the desktop. The Start Here location is displayed. Double-click on the Desktop Preferences object in the file manager window, then double-click on the Accessibility folder. accessibility setting assistive technology preferences preference tools Assistive Technology Use the Assistive Technology preference tool to enable assistive technologies in your desktop environment. You can also use the Assistive Technology preference tool to specify assistive technology applications to start automatically when you log in. lists the font settings that you can configure. Setting Description Enable assistive technologies Select this option to enable assistive technologies in your desktop environment. Screenreader Select this option to start the Screenreader application automatically when you log in. Magnifier Select this option to start the Magnifier application automatically when you log in. On-screen keyboard Select this option to start the On-screen keyboard application automatically when you log in. AccessX preference tools, Keyboard Accessibility keyboard configuring accessibility options accessibility configuring keyboard preference tools Keyboard Accessibility Use the Keyboard accessibility preference tool to set the keyboard accessibility preferences. The Keyboard accessibility preference tool is also known as AccessX. You can customize the settings for the Keyboard accessibility preference tool in the following functional areas: Basic Filters Mouse lists the basic keyboard accessibility settings that you can modify. Option Function Enable keyboard accessibility features Select this option to enable keyboard accessibility features. When you select this option, the other options in the preference tool become available. Disable if unused for Select this option to deactivate keyboard accessibility preferences if the keyboard is not used for a specified period of time. Use the slider to specify the number of seconds of keyboard idle time required before the system disables the keyboard accessibility preferences. When the specified number of seconds elapses, the following keyboard accessibility preferences are disabled: Bounce keys Mouse keys Slow keys Sticky keys Toggle keys Beep when features turned on or off from keyboard Select this option for an audible indication when a feature such as sticky keys or slow keys is activated, or deactivated. Import Feature Settings Click on this button to import an AccessX configuration file. Enable Sticky Keys accessibility sticky keys Select this option to perform multiple simultaneous keypress operations by pressing the keys in sequence. You can specify the following sticky keys settings: Beep when modifier is pressed: Select this option for an audible indication when you press a modifier key. Disable if two keys pressed together: Select this option to specify that when you press two keys simultaneously, you can no longer press keys in sequence to perform multiple simultaneous keypresses. Repeat Keys accessibility repeat keys Select this option to enable the autorepeat settings for your keyboard. Delay: Use this setting to specify the interval to wait after the first keypress before the automatic repeat of a pressed key. Speed: Use this setting to specify the number of characters per second to enter. Type to test settings The test area is an interactive interface so you can see how the keyboard settings affect the display as you type. Type text in the test area to test the effect of your settings. For more information on configuring keyboard accessibility preferences, see GNOME 2.2 Desktop Accessibility Guide. lists the filter settings that you can modify. Option Function Enable keyboard accessibility features Select this option to enable keyboard accessibility features. When you select this option, the other options in the preference tool become available. Enable Slow Keys accessibility slow keys Select this option to control the period of time that you must press-and-hold a key before acceptance. You can specify the following slow keys settings: Only accept keys held for: Use this setting to specify the period of time that you must press-and-hold a key before acceptance. Beep when key is: Select the appropriate option or options for an audible indication when a key is pressed, accepted, or rejected. Enable Bounce Keys accessibility bounce keys Select this option to accept a key input and to control the key repeat characteristics of the keyboard. You can specify the following bounce keys settings: Ignore duplicate keypresses within: Use this setting to specify the interval to wait after the first keypress before the automatic repeat of a pressed key. Beep if key is rejected: Select this option for an audible indication of key rejection. Enable Toggle Keys accessibility toggle keys Select this option for an audible indication of a toggle keypress. You hear one beep when a toggle key is turned on. You hear two beeps when a toggle key is turned off. Type to test settings The test area is an interactive interface so you can see how the keyboard settings affect the display as you type. Type text in the test area to test the effect of your settings. For more information on configuring keyboard accessibility preferences, see GNOME 2.2 Desktop Accessibility Guide. lists the mouse settings that you can modify. Option Function Enable keyboard accessibility features Select this option to enable keyboard accessibility features. When you select this option, the other options in the preference tool become available. Enable Mouse Keys accessibility mouse keys Select this option to make the numeric keypad emulate mouse actions. You can specify the following mouse key settings: Maximum pointer speed: Use this setting to specify the maximum speed that the pointer moves across the screen. Time to accelerate to maximum speed: Use this setting to specify the duration of the acceleration time of the pointer. Delay between keypress and pointer movement: Use this setting to specify the period of time that must pass after a keypress before the pointer moves. Mouse Preferences Click on this button to open the Mouse preference tool. For more information on configuring keyboard accessibility preferences, see GNOME 2.2 Desktop Accessibility Guide.