Hi Oswald, Junio and Phillip. Thank you for your reviews. Let me reply to each comments. > i'd recommend quoting the dash as you do in the summary (or adding some markup?), as otherwise it's way too easy to misread. That's good. I'll fix it. > It is certainly *not* synonymous in general and I > doubt we want to make it to. That's correct. Your examples helped me understand. > A few commands (checkout, merge, rebase and switch spring to mind) accept '-' as a shorthand for '@{-1}' but I don't think it is universally accepted. That's correct too. > for now we should > update its documentation to mention "- can also be used in place of > @{-1}". Finally, How should I update the documentation? How about following changes? - You may also specify `-` which is synonymous to `@{-1}`. + Only some commands (checkout, switch, etc,), you may also specify `-` which is synonymous to `@{-1}`. Other commands also seem to accept '-', such as `cherry-pick`. It's not good idea to write all commands that accepted it. Best Wishes