Page attributes can be defined per page in the AsciiDoc document header (e.g., `:page-support-phone: +1 212-555-1234`) or globally in the playbook under the key `asciidoc.attributes`.
The `page-` prefix is used to isolate page-related attributes from the numerous other document attributes in AsciiDoc.
+| page.author
+| The first author of the document, if one or more authors are specified in the AsciiDoc header.
+
| page.description
| The text of the description attribute in the AsciiDoc header, if specified.