So you’ve got a code sample you want to share in a presentation, but whilst it looks beautiful in your text-editor with syntax highlighting, it’s fugly in Keynote? You could screenshot it and paste the image into your slide, but you just know that you’ll want to change that code, and end up re-snapshotting it…what a PITA. Better to have a nicely syntax-highlighted code snippet that you can paste as formatted text into Keynote and amend from there as needed.