//main action code
action main()
| |>setup
| while true do
| | |>loop
| end while
end action


//loop action code
private action loop()
| var menu_choice := wall -> ask number("Menu
					 1. Pedometer
					 2. Pulse
					 3. Temperature")
| if menu_choice = 1 then
| | |>pedometer
| else if menu_choice = 2 then
| | |>pulse
| else if menu_choice = 3 then
| | |>temperature
| else
| | "Error: Invalid input! Please try again." -> post to wall
| end if
end action