Rubrication was one of several steps in the medieval process of manuscript making. Practitioners of rubrication, so-called rubricators, were specialized scribes who received text from the manuscript's original scribe and supplemented it with additional text in red ink for emphasis. from wiki

Hi Alena. I don't believe so. I'm not familiar with the term in that context, it's not a very common term, but rubricators were people in older times who were "professional printers/writers" so to speak, prior to the invention of modern day printing technology Edit: I just realized that description probably wasn't very clear. They manually wrote things in ink on paper, long before the modern era