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122 HANDBOOK OF ELECTRONIC ASSISTIVE TECHNOLOGY

Table 5-3 Mouse Access Settings

Access Option What It Does Why It Is Useful
Pointer speed Adjusts the speed of movement of the pointer Users who have difficulty pointing accurately
on screen. may find it easier if the mouse speed is
slowed down.
Snap To Automatically moves the mouse pointer to the This feature can reduce the need for users
default button in a dialogue box. to move the mouse pointer and therefore
increase speed and reduce fatigue.
Pointer size The pointer size and colour can be altered. This can be helpful for users who have a
visual impairment or find it difficult to see the
standard mouse pointer.
Pointer visibility ‘Display pointer trails’ leaves a ‘trail’ behind the The pointer visibility options can help users to
pointer as it moves. locate the mouse pointer on screen.
‘Show location’ highlights the location of the
pointer when the CTRL key is pressed.
Swap buttons Swaps left and right buttons. Helpful for left-handed users or people who
find it hard to reach the left-hand button on a
joystick or trackball, for example.
Double click Adjusts the speed at which a double click is Slows down the double quick speed for users
speed accepted. who have difficulty clicking in quick succession.
ClickLock Holds down the mouse button for a set time to Enables the user to highlight or drag without
lock the button for highlighting or dragging. having to hold the mouse button down.
Scroll wheel Adjusts the speed of scrolling for the scroll To adjust the sensitivity of the scroll wheel
wheel if the pointing device has one. response to the user’s preference.

FIGURE 5-11 Controlling the mouse with MouseKeys on a number pad�