input: [EITAS] 1194.21(c) [Category] Software Applications and Operating Systems [Supporting Features] Supports. The current focus is identified visually through the display and audibly through speech output systems. Assistive technology can track the focus as it changes. (For example, when the application runs with a screen enlargement program, the magnified area moves to follow changes in the focus.) [Summary of Supported] Supports [Section 508 Rule] 
output: A well-defined on-screen indication of the current focus shall be provided that moves among interactive interface elements as the input focus changes. The focus shall be programmatically exposed so that assistive technology can track focus and focus changes.