In Settings → Settings → Editing, you can display a vertical edge to indicate the column width that you do not want to exceed.
I currently have 80 characters, but I would also like to add one of 120 characters as the coding standards that I adhere to have different limits for different languages. However, I can not find either a native parameter or a plugin that allows me to have several vertical edges (the cherry on the cake will have them in different colors).
I did an extensive search on the Internet, but didn't seem to find anything. Has anyone else found a way to do this?
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