Set the line speed (baud rate or bits per second) of any serial
interface used by @value{GDBN} for remote debugging.
+@item -l @var{timeout}
+@cindex @code{-l}
+Set the timeout (in seconds) of any communication used by @value{GDBN}
+for remote debugging.
+
@item -tty @var{device}
@itemx -t @var{device}
@cindex @code{--tty}