Step 1: Open up the demo in the Editor.
Step 2: Click on the text you wish to replace.
Step 3: Edit your text and apply any styling you'd like. You can:
Step 4: You can also mass-replace text on the screen with the Find & Replace feature. To do that, click on Find & replace on the top bar.
Step 5: Enter the original text and the target text, then click on Replace All.
Step 6: All instances of the original text will be replaced on the screen. Keep in mind this doesn't work on all screens at once - only the one you're currently on.