|Version:||WCAG 2.0 and up|
Components that have the same functionality within a set of Web pages are identified consistently.
The purpose of this success criterion is to ensure that components that have the same functionality are identified consistently so users can anticipate their use.
How to Meet
Authors need to ensure that they use consistent naming practices for any components that are repeated across documents. For example, if the same icon is used to identify a certain type of sidebar, the label for the icon must not change from document to document. Similarly, if an image is used to identify extended descriptions, the label for the image must not change.
Note that it is not required that the components have identical labels to meet this success criterion. Some parts of the label may be document-specific so long as the general naming pattern is the same (e.g., an icon for extended descriptions might always start with "Extended description for" but be follow by the specific figure number for the image).
Note that this success criterion only applies across a set of documents. If an EPUB Publication only consists of a single document, then technically this success criterion does not apply.
The following knowledge base pages provide more information about how to address this success criterion for publishing content: