/usr/ is in libhkl-doc 4.0.3-4ubuntu1.
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..
/usr/share/gtk-doc/html/hkl-4/
/usr/share/
/usr/share/gtk-doc/
/usr/share/gtk-doc/html/
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/usr/share/doc/
/usr/share/doc/libhkl-doc/
/usr/share/doc/libhkl-doc/copyright
/usr/share/doc/libhkl-doc/changelog.Debian.gz