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Do you leave reminders when you have to stop playing?
(files.catbox.moe)
Had to stop for IRL reasons. Was about to build a coal depot but I knew that saving at a blank screen would be confusing.
I use a kanban, or you can make notes with the in-game displays
https://gokanban.io
Or a Google doc, or just a paper on your desk with notes. :)
That's a real "factorio teaches you software engineering" kind of moment.