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Categories
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By convention, rules have names starting with common prefixes:

- ``depr``: This functionality is deprecated
- ``error``: Soufflé would reject this code

  * ``error-dup``: Some entity is duplicated

- ``simpl``: The code can be simplified, possibly for better performance

  * ``simpl-dup``: Some entity is duplicated

- ``style``: This is a stylistic choice

  * ``style-name``: This is a stylistic choice about names