Tap once:

Show plane on the RADAR.

Tap twice:

Show the route and other information on the RADAR.

Tap once:

Send the exit level to3 the next sector for verification by that controller.

Write a flight level:

Tell the software to interpret the level and provide feedback to the controller. If OK, send the level to on-line tools.

Write a "V" or draw a line to a beacon:

Tell the software that a new direct route has been authorized.

Tap once:

Flag this strip.