[RTTY] SO2R Question

[Stephen E. Wojton]

All,
        I have never operated SO2R. One question that I have. When a contest such as the NAQP RTTY has a rule that states that for Single Operators are allowed only one transmitted signal at one time, how do you accomplish this ? Something in the software that does not allow one rig to transmit while the other one is ? Or do we just go by an honor system ?

73 es RTTY DX to all
Steve- N2DBI - future SO2Rer.