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2 Boris K: There's no checkbox – we looked for it together. Perhaps a patch is needed.
2 Night Nazgul: Thanks, I found it. However, the tweaker isn't working yet; I'm trying to figure it out.
Actually, the fullscreen mode is controlled by the gfx_fullscreen variable (values 0 or 1) in the user.cfg file. However, the resulting window doesn't have a Windows frame or title bar with control buttons, meaning it can't be moved or resized using the mouse. Research continues... :smile27: