My father had mostly worked on larger projects, like tract houses and the like. Of course, times change, my recollection was of how things were a long time ago. My comment was just illustrating an instance where relying on a text description was still important even though there was a graphic format as well.

Your info was relevant to the idea of that at some level of complexity it becomes necessary to use text vs. only graphic presentation. Maybe in construction that occurs when there are more than a few elevations to juggle, but you probably know much more about it than me.