There is no button on the formula bar, but there is an UNDO button on the menu bar. You also can press ESC to cancel your edit.
You can press ESC to cancel your edit. You can press the UNDO button to return to your previous text. If you are still in edit mode when you make the mistake, you can just change the mistake to whatever you like.
u press the b button
you press the dot
The backspace?
to make ammends to redo to make things right
To make a heart you press this button < then you press 3 and it forms a <3.
you press the button :0
You press the button.
No.
Hold CTRL and Shift press the + or = button to make the font bigger, to make it smaller hold CTRL and Shift and press the - or _ button. Hopefully that helps :D
Press the [/|?] button.
Press W or Wave.