Statically paginated formats (e.g., PDF) where the user agents include a mechanism to navigate by page typically meet this success criteria by default. The user agents for the EPUB format also typically provide the navigation mechanism if a page list is included. Web browsers do not have a standard page navigation mechanism, so for HTML content with page break locators it is the author responsibility to add that mechanism.
+For a Page Break Locator to be a "programmatically determinable destination marker", it needs to have a role that identifies it as a page break, and a method of determining which page in a sequence it represents. This would not apply to an element which visually shows a page number, unless it also has a recognized role. Technique H99 provides an example of a page break locator.
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