0 used when something appears or happens in a way that is impressive, surprising, or pleasing:
A rock can be lifted away and - ta-da ! - colourful fish swim out.
I called up the calculator function of my maths program, typed in the numbers, and ta-da! There was the answer.
Sarah scurries off to a kitchen area and returns - ta-da ! - with a large hot-food pan.
Ta-da! Now you can click, drag, and generally perform tasks on the computer remotely, as if it were right in front of you.
