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It doesn’t matter when use it in English, but it’s useless when use it in other languages.
Is there any way to turn this off?
Not that I am aware of. Those lines are provided by Windows when the programmer puts certain information into the program’s resource file(s), so to turn them off, L&L would have to provide a way to modify the resources on the fly.
You could try something like Resource Tuner, but that is an expensive and maybe time-consuming way to go just to get rid of some cosmetic lines. And there is no guarantee that you wouldn’t screw up the Scrivener EXE file in the process.