Thorium provides no mean to identify print page source

[gautierchomel]

The Go to page function relies on authored pagebreak which may or may not be related to a printed version of the book. This is a recurrent and long discussion as authoring guidelines provide flexibility for content creators, and we cannot use known elements as dc:source being confident that it is the source for page breaks.

EPUB — Page Source Identification now provides an explicit metadata property pageBreakSource and Daisy knowledge base also provides a refine methodology to affirm which is the page source for page break Example 2 — Page break source identification (source-of).

Therefore, we have a safe way to provide page break source identification.

For now, documentation will provide that information:

• Go to page, an authored list of page breaks. The page list may refers to a print version and allow to use the ebook in a mixed reading environment, so it becomes possible to locate or make a citation. In such case, Thorium Reader actually offers no mean to identify the related print book, it has to be textually and explicitly informed in the content by the content creator.

[gautierchomel]

Example (we will probably want to be less verbose).

or