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Description
It's great that HackMD has Vim keybindings. Of course it's not full-featured vim, as is evident when doing a search (it says Javascript regex).
I'd like to know what package you're using to implement the Vim keybindings, so that I know what is and what isn't supported. Couldn't find it quickly, but stopped short of searching the code base..
Step 1: Just say what you're using, presumably the package explains what is and isn't supported
Step 2: Put a bit of information in the help section to tell people what is and isn't supported, without having to dive into Github issues.