By default, the Auto-update button is pressed and the display will update when new data is available.
The Data Key Button pops up a Data Key Window. The Data Key explains the meaning of the symbols that appear on the display. It also provides a way for the user to turn data options on/off by clicking on the main labels for the data key symbols (i.e. Turbulence, Icing, etc...).
Click on the main labels (Icing, Turbulence,
Weather Conditions) to turn data options on and off on the main user
Clicking on the Icing label above
results in the selection of the Icing option on the main user interface.
Another click on the Icing label in the Pirep
Key results in the deselection of the Icing data option on the main