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reference-cfg-format: Document the direction attribute

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Daniel Marjamäki 2019-06-28 15:18:00 +02:00
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man/reference-cfg-format.md
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@ -89,6 +89,8 @@ To specify the behaviour of functions and how they should be used, `<function>`
The arguments a function takes can be specified by `<arg>` tags. Each of them takes the number of the argument (starting from 1) in the nr attribute, `nr="any"` for arbitrary arguments, or `nr="variadic"` for variadic arguments. Optional arguments can be specified by providing a default value: `default="value"`. The specifications for individual arguments override this setting.
You can specify if an argument is an input or output argument. For example `<arg nr="1" direction="in">`. The allowed directions are `in`, `out` and `inout`.
### Not bool
Here is an example program with misplaced comparison: