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+.Dd December  8, 2020
+.Dt MODEM 1
+.Os
+.
+.Sh NAME
+.Nm modem
+.Nd fixed baud rate wrapper
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl r Ar rate
+.Ar command ...
+.
+.Sh DESCRIPTION
+.Nm
+runs the
+.Ar command
+in a new PTY
+with a fixed baud rate.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl r Ar rate
+Set the baud rate.
+The default is 19200.
+.El
+.
+.Sh BUGS
+Window size changes are not propagated
+to the child PTY.