Enter blockwise Visual mode with Ctrl-v to select rectangles of text. It is useful for column edits and repeated inserts.
Commands you practise
Ctrl-v
Start blockwise Visual mode to select a precise rectangular area of text. It's the secret to editing multiple columns simultaneously with ease.
Levels
Unstar the Fruits (easy): Remove the bulky '#* ' prefixes from the start of each line.
No More Temp Ports (medium): Strip out the temporary '[TEMP] ' labels from the middle of the port listings.
Purge the Errors (hard): Isolate the core test function names by stripping the error prefixes and fail suffixes.
Each level opens a real Neovim session in your browser with a start file and a target file. Edit one into the other in as few keystrokes as you can, then race the vimbot's solution.
Part of VimGolf.ai Premium ($10 once, lifetime). Region: visual mode. See the whole skill map.