For those who might be looking at those printing maps and thinking: "I'm not printing correctly, because I don't make these......"
Don't worry, because most don't do that.
There are a few situations where doing that is really important - for example those who print for others and normally corroborate with their client on the progress to the final result, those who print editions, and need to be able to replicate earlier prints, and those who use the maps to teach others about printing - but for most people, whether or not you do that depends on whether doing so helps you work.
And that varies from printer to printer.
I mostly do that sort of thing when I'm printing in any quantity - several prints from the same negative - and I want to be able to finish one session and then take up the printing later. That and when the print is something I'm likely to want to discuss with my Darkroom Group.
Don't worry, because most don't do that.
There are a few situations where doing that is really important - for example those who print for others and normally corroborate with their client on the progress to the final result, those who print editions, and need to be able to replicate earlier prints, and those who use the maps to teach others about printing - but for most people, whether or not you do that depends on whether doing so helps you work.
And that varies from printer to printer.
I mostly do that sort of thing when I'm printing in any quantity - several prints from the same negative - and I want to be able to finish one session and then take up the printing later. That and when the print is something I'm likely to want to discuss with my Darkroom Group.