Generalize (some of) the page metadata so it's not tied to pages sourced from AsciiDoc
We're starting to consider adding non-asciidoc pages to the content catalog. They should be able to have some sort of attributes. For instance, asciidoc pages now can supply automatic link text through having doctitle set in asciidoc.attributes (by the first pass in convert-documents). Whatever is adding the non-asciidoc pages might like to similarly supply automatic link text for xrefs from asciidoc pages. Right now this is possible by adding an asciidoc property to the non-asciidoc page, but that is obviously an abuse better avoided.
One possible name for the key for these attributes is metadata
Edited by Dan Allen