Item Number: Success Criterion 4.2.1
Part of Item:
Comment Type: ED
Comment (Including rationale for any proposed change):
This guideline does not read like a guideline (same with 4.2.3), is not immediately clear what it means without reviewing the HowTo, and can be interpreted in different ways (i.e. ...may [also] be, or ...may [instead] be...). I interpret it first as meaning I can include a link from the accessible version to the innaccessible version. In fact it should be the opposite that is true (and I'm sure based on the howto that is what was intended), including a link from the innaccessible version to the accessible one.
Ideally there should be reciprocol links between the two versions.
We have moved discussion of alternate versions of content to the Conformance section of the Guidelines, and we have clarified by adding the following conformance requirement
Alternate Versions: If the Web page does not meet all of the success criteria for a specified level, then a mechanism to obtain an alternate version that meets all of the success criteria can be derived from the nonconforming content or its URI, and that mechanism meets all success criteria for the specified level of conformance. The alternate version does not need to be matched page for page with the original (e.g. the alternative to a page may consist of multiple pages). If multiple language versions are available, then conforming versions are required for each language offered.
We have also updated the understanding document to clarify situations when different sufficient techniques would apply.