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User selects using controls (sliders, knobs, etc.)

The user is able to adjust the color over a continuous range rather than from specific provided colors

Screenshot of color filters options in iOS Settings.

Modify the colors on the display to help a person with color blindness differentiate between the colors that they have difficulty seeing.

WiViK on-screen keyboard with color-coded keys and word predictor on left

WiViK® is an on-screen keyboard that enables people with physical disabilities to access any application within Microsoft Windows 95/ 98/Me/NT4/00/XP. The WiViK keyboard is displayed within a window that you can move and size.

Large, yellow rectangular software box with screen shot of MAGic software menu on cover.

A screen magnification and screen reading program for low vision computer users.