How do I create a timer.

I'd like for a text to display the amount of time elapsed since the user clicked the "go" button, as well as a way to stop the timer if the "stop" button is clicked.

This involves using the timer behavior. Before you do any of the following, be sure to set a tag for the timer (i.e "stopwatch") when you use an event to set it, such as on button or key press.

Next, create a text object and every tick, set it to:

<objectname>.Timer.CurrentTime("stopwatch")