Rob Hudson asked about the modern "standard" for diagramming. As far as I'm aware not much has changed in comparison to the article that Robert Lang wrote 16 years ago, but there might be some minor improvements in some areas of diagramming. Here is for example something Nicolas Terry found out regarding the arrangement of the individual drawings if you use the line style: https://www.facebook.com/nicolas.terry2/posts/10207361541739324 People seem to have a better time reading the diagrams if there is a T structure. I know relatively few articles on diagramming, one of them is by Peter Budai: http://www.budaiorigami.hu/en/diagramming He also lists some resources at the bottom of the page. Fernando Gilgado uses a pretty nice way to distinguish between open and closed sinks in his diagrams by using an arrow that either has a flat back for the closed ones and a back that is a little sunken in for open ones. I'd like to see that used more often and try to incorporate it in my new diagrams.
There are also some interesting articles in OUSA's online magazine "The Fold": https://origamiusa.org/thefold Andrew Hudson seems to have written quit a lot on the subject. Nice Greetings Anna from Vienna, Austria
