There are 14 major accessibility guidelines in WCAG 1.0. Each is divided into a bunch of
checkpoints. In an even brighter flash of brilliance, the 14 guidelines do not map elegantly
to priority/conformance levels; instead, any given checkpoint inside a guideline could
apply to any of the three levels. For instance, guideline 2 states ???Don??™t rely on color alone.???
Within that, checkpoint 2.1 states ???Ensure that all information conveyed with color is also
available without color, for example from context or markup.??? Checkpoint 2.2 then goes
on: ???Ensure that foreground and background color combinations provide sufficient contrast
when viewed by someone having color deficits or when viewed on a black and white
screen.??? Checkpoint 2.1 is required for Priority Level 1 while Checkpoint 2.2 is required for
Priority Level 2 (images) and Priority Level 3 (text). If you haven??™t already guessed, things
are rarely simple with the W3C.
Here are the 14 guidelines.7 Some guidelines are more obvious than others, and the checkpoints
within each range from the painfully obvious to the near impossible:
1. Provide equivalent alternatives to auditory and visual content.
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