> How do I write a plain text file in Word?
In college I was a TA a course that (among other things) was the first place students would usually encounter C and the CLI. To standardize how things were compiled and run, we would test everything from the assignments on the school's Linux server that everyone had ssh access to. In order to teach the students how to connect to and use it, we'd have a seminar going over the basics of the Unix shell, sshing, text editing, etc. Because every year there would inevitably be some students who got confused about the idea that Word wasn't a text editor, I started demoing during the seminar opening Word, saving a .docx file (the default by the time I was doing this), and then changing the extension to .zip and double clicking it to show that it was full of XML files under the hood.
I'm not sure whether it was fully clear how that worked to all of them, but it did at least seem to cut down on the number of students in office hours who were trying to write their C code in Word, maybe just because they remembered "oh that's the TA who was really adamant that I don't use Word for this".