Example for Checkpoint
11.1 - continued

Another question authors may be asking:

User agents are supposed to ignore HTML attributes they don't support.

For example, the HTML 4.0 <A> element has an attribute, "charset" that lets you specify the ISO character set of the linked document, but no browser currently supports it. Therefore, it is simply ignored. This means that you don't have to worry about what will happen if you include an attribute that is not yet supported. The WAI hopes that user agent manufacturers will soon implement all the HTML 4.0 attributes.