The user has the opportunity to review, correct and confirm any information he has entered. The website presents error and status messages to assistive technology even when the user is not concentrating on the error message. AAA level compliance Sign language interpretation is provided for any pre-recorded synchronized media. Pre-recorded media has closed captions with extended audio description. Untimed alternatives are provided for video media only. Untimed alternatives are provided for audio-only media. The content implemented through markup languages and the purpose of user interface components can be determined programmatically.
Normal text contrast is at least 7:1. and bold text is at least 4.5:1. If the pre-recorded audio is mostly speech, there should be no background noise, or the difference between background noise and speech should be at least 20 dB. Musical content is exempt. The user must be able to modify the individual email list format of text blocks so that: foreground and background colors are user selectable, paragraphs do not exceed 80 characters or 40 Chinese/Japanese/Korean glyphs, the line spacing is at least 1.5 and the paragraph spacing is at least 3, Text does not force the user to scroll horizontally when resized up to 200%. Text images are purely for decoration. Logos are exempt.
All features of a website are accessible only with a keyboard interface. No function on a website should be time-sensitive unless it relates to real-world events. Any non-urgent interruption can be interrupted or rejected by the user. When a session expires, users should be able to re-authenticate and resume entering information. Users should be clearly informed if data will be lost after a period of inactivity, and an option should be provided to save user data and continue at a later date. Animated movements are not essential for conveying information.