If you’ve spent millions of hours perfecting your artistic rendition of a new Sprite in Scratch’s costume editor, (let’s say an adorable tiger!) and another billion hours working out the complex script for the little guy’s dance moves, you may want to re-use the costume art and/or the script in the same project and you’ll definitely want to save them for posterity.
Here’s how to “leverage existing code” (programmers like to say stuff like that and managers LOVE to hear it!)
Fox Valley Girls Coding Club 