When you write a handler for a function, you specify statements that compute and return a value to the handler that calls the function. Each function handler has the following form, where the italicized words are placeholders:

function functionName

  statements

end functionName

NovoCard has many built-in functions, but you can also write your own:

on touchUp

  answer(String(square(5)));

end touchUp

function square x

  result(x * x);

end square

The function square receives a number through its parameter variable, x. It then returns the value of x * x to the handler that called it (touchUp) using the result command.