Template:Sideheadered-page/doc

This template is intended to be used in headers in the Page: namespace to mark content present in the side margin at the start of a page. As these are often repetitious artefacts of the style of typesetting used (such as Chapter, or Section markers) at the time of publication or creation of the book, that are not relevant to the work when pages are combined, these side margin headers are typically omitted in transclusion. This template allows these to be indicated in the header of Pages for completeness.

Usage
In the header of a relevant Page:

where is a the side margin content to be noted.