Quite different, we used to make a photographic mask often from a drawn piece of artwork on lith/line film, processed in Formalith developer, (AN79/D85) these developers give good sharply defined edges. Often we'd make a 5x4 positive and then enlarge it to make a larger negative.
Hmm. Yes, quite different. Sorry: didn't read your response correctly and assumed you were referring to Rubylith film.