The backtick (`) key used to be one of Quip's keyboard shortcuts that allowed you to scroll through various formatting options. In that this caused a decent amount of confusion, we deprecated the backtick as a shortcut. Now...
*If you would like to type an actual backtick, you simply type the backtick symbol on your keyboard.
*If you'd like to quickly scroll through formatting options, you'll want to use shift + ~
We also built some cool logic into Quip for this launch
The first time you try to use a standard backtick, you'll see an in product message (for about 10 seconds) that displays the new shortcut.