In case it's useful to anyone, I've added the design documentation used when creating The Memory Archivist. This was mainly so that I had one location to record all my code that I could easily access if I needed to check variables or CSS styles. I also used it to initially plan branching and choices, but as the piece took shape, I spent more time developing this within Twine itself rather than in the document. If you've played The Memory Archivist and read the design document, you'll probably be able to spot roughly the point where this happened!