Not quite the same, but similar: Print-to-PDF. I've been doing this instead of bookmarks for years now, and as a result have a huge library of local PDF's, usable offline, for all kinds of technologies that I'm interested in/use regularly. With a few key searches I can find all the docs on luarocks, or mysql FAQ's, etc. - I find this a great way to have searchable local documentation for the moments I need to look things up. Its not quite a cheat sheet, but having my own local searchable PDF archive for all the technical howto/tutorial-style HN articles of interest over the years has been invaluable.
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Not quite the same, but similar: Print-to-PDF. I've been doing this instead of bookmarks for years now, and as a result have a huge library of local PDF's, usable offline, for all kinds of technologies that I'm interested in/use regularly. With a few key searches I can find all the docs on luarocks, or mysql FAQ's, etc. - I find this a great way to have searchable local documentation for the moments I need to look things up. Its not quite a cheat sheet, but having my own local searchable PDF archive for all the technical howto/tutorial-style HN articles of interest over the years has been invaluable.