/usr/share/man/man1/libpng-config.1.gz

This file is indexed.

/usr/share/man/man1/libpng-config.1.gz is in libpng-dev 1.6.28-1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/share/man/man1/libpng16-config.1.gz