Texas Instruments TI-73 Manual Book page 28

7. Mark each board that you want to send by using  and  to
point to the board's name and then pressing E.
8. Press  to highlight
marked boards are transmitted to the receiving unit.
When the transmission has completed, both calculators
display the message
9. On each calculator, press  O to exit the Link
application.
TI-73 Geoboard
, and then press E. The
TRANSMIT
.
Done
Page 28