Show configuration (baudrate, databits, etc.)
.IP "\fBctrl-t e"
Toggle local echo mode
+.IP "\fBctrl-t f"
+Toggle log to file
+.IP "\fBctrl-t F"
+Flush data I/O buffers (discard data written but not transmitted and data received but not read)
.IP "\fBctrl-t g"
Toggle serial port line
.IP "\fBctrl-t h"