Open lines & replace a character
o, O to open new lines; r to swap a single character.
beginner » Open a new line below and type x.
goal
top
x
1
topkeys
your keystrokes appear here as you press them
Best on a keyboard
“Open lines & replace a character” is a hands-on typing drill — it needs a physical keyboard. Open it on a laptop or desktop to play. You can still browse and read everything here on your phone.
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