+.BI \-roundtrip
+Call LyX to re-export the created output file to LaTeX. The output file name
+is always determined automatically to avoid over-writing the input file by
+accident: If the input file is named \fIfoo.tex\fR the output file will be
+named \fIfoo.lyx.lyx\fR, and the re-exported file will be named
+\fIfoo.lyx.tex\fR.
+.TP