MacBook Shortcut: Zoom In To Where Your Cursor Is (Toggle Zoom)
If you present with a MacBook, here is a tip you need to have. Toggle zoom will allow you to zoom in or out of the spot of your screen where the cursor is. This is an easy way to get a close look at text or a part of your screen that might not be visible from the full wide view.
You'll just need to enable this feature from the Accessibility preferences and use the keyboard shortcut Option + Command + 8.