ExportEditorials renders the contest's problem editorials into a single printable PDF booklet and returns a link to download it rather than the document itself. Editorials are taken in contest order and in one locale, the space's primary one unless another is requested, and a problem with no editorial in that locale is silently left out of the booklet; the call returns NotFound when none of the contest's problems has an editorial. Access follows the same rule as DescribeEditorial: an organiser may export at any time, while a participant may only once their participation is over and the contest is configured to display editorials. Rendering is slow and tightly rate-limited, so keep the returned URL instead of exporting again.