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Add clarification to avoid misunderstanding that cause #3360 (#3378) 

* Update macros.md

Typos, typos
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Andrea Cocito 2022-03-07 13:43:50 +01:00 committed by GitHub
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doc/mkdocs/docs/features/macros.md
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@ -51,6 +51,8 @@ that enabling this macro increases the size of every JSON value by one pointer a
The diagnostics messages can also be controlled with the CMake option `JSON_Diagnostics` (`OFF` by default) which sets
`JSON_DIAGNOSTICS` accordingly.
WARNING: As this macro changes the definition of the json object, it MUST be defined in the same way globally, even across different compilation units; do NOT link together code compiled with and without JSON_DIAGNOSTICS defined as this is a violation of the One Definition Rule and will cause undefined behaviour.
!!! info "Default behavior"
```cpp