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Description
Two interactive code windows were removed from the sample article at dd9c974, and a follow-up removed a cross-reference to one of them at 9f75429.
Once Runestone and PreTeXt CSS are harmonious, then these can be brought back, and that will trigger loading Runestone Services. Or maybe we are loading Runestone Services routinely by then.
Point is - this is a reminder to bring back something similar for the sample article.