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urbit.org/reference/cheat-sheet.md
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2title = "Cheat sheet"
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7Download the cheat sheet PDF [here](https://storage.googleapis.com/media.urbit.org/docs/hoon-cheat-sheet--2017-12-12.pdf).
9We've found it's useful to have a quick reference of Hoon's syntax always at
10hand. So above is a download link to a Hoon cheatsheet .pdf. It's missing a
11few of the literal syntaxes, but it covers the most common ones.
13This doesn't list any of the Ford runes, although there is now at least
14some documentation for those [here](@/docs/learn/arvo/ford.md).
16The following runes also exist, but are currently undocumented and not listed in
17the cheat sheet:
19```
20!: :: turn on debugging printfs
21!. :: turn off debugging printfs
22!; :: using the "type of type", emit the type for an expression
23!, :: emit AST of expression
24$* :: bunt (irregular form is *)
25^. :: use gate to transform type
26^& :: zinc (covariant) -- see the docs on advanced types
27```