Yeah, I know a very professional title, it is also very clear Look, I just wrote it on here to be sure I won’t lose it. Also, it might be useful to someone else.

:r newfile.txt

Reads in newfile.txt in the current file, you can use TAB completion

:r!date

Puts the date in a file; ! reads the output of a command

:5, 22s /^/  /

Adds to two spaces before line 5 until 22, there two spaces in between the last two /.

Please, don’t ask questions about this, I don’t know what I am doing