I have a large document that I want to build using page breaks, not multiple pages. However, when I add the page break, there is no link to the next page. Is that not implemented, or an I missing something here?
No, we don’t use that feature in the theme. This is normally used to add a “read more” link in the default WordPress front page post listings. It doesn’t provide pagination.
I’d recommend either splitting into several tasks within a guide, or using the “Manual” functionality to display in an accordion see example. This is a setting in the task module options.