tracingonline := -1; write "hello" to "xfoo.mut"; write EOF to "xfoo.mut"; % This crashed mp in 6.96 for Ulrik, probably from openoutnameok? % Also problems with docstrip. % (Except his filenames didn't have the x's.) write "test" to "xopeonout"; write EOF to "xopenout"; write "test" to "./xopenout"; bye.