Karbon
Scratch Support FAQs
How do I change the custom toolbar buttons? ∞
Swipe to the customizable toolbar. It’s between the default toolbar (with Clear, History and Action) and the Markdown toolbar (with Bold, Italic, etc). Touch and hold on any of the customizable buttons. When instructed, choose any other key from your keyboard to set the new button’s value.
Hint: You can set any key from any keyboard, including Emoji.