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docs/include_diagrams.md

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 # Generating include diagrams
 
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+* [Tracking system headers directly included by projects files](#tracking-system-headers-directly-included-by-projects-files)
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 Include diagrams allow to document the include dependencies among different parts of the project. This can be very useful
 for instance to detect that a file was included from a module directory, on which specific part of the project
 should not ever depend.