Yeah, and in other news: I found my ancient IBM flowcharting template.

So while I have never been a big fan of flow charts, this might be a fun digression, given my latest obsession with DNA, hair, solar flares, and tessellations, with or without help from Euclid - of course.  Weird to contemplate that there are different pre-defined symbols for magnetic vs. paper tape input, or else manual input vs. punch cards, and so on.  A process seems to be a simple rectangle, whereas I/O operations are these other parallelograms.  Yeah, yeah, yeah.  And so it goes.