Header files and man pages are currently copied to the image. They should be packaged in a JMOD file of the module they belong to.

The header files are in the modular source:
   src/$MODULE/share/native/include

It's proposed to include the man pages in this directory and they can be packaged in its corresponding JMOD file:
    src/$MODULE/share/man

jlink should also provide options to exclude the man pages and header files.