/usr/share/doc/rest2web/html/reference/ is in rest2web-doc 0.5.2~alpha+svn-r248-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/rest2web/html/reference/changelog.html
/usr/share/doc/rest2web/html/reference/encodings.html
/usr/share/doc/rest2web/html/reference/encodings.txt
/usr/share/doc/rest2web/html/reference/gallery.html
/usr/share/doc/rest2web/html/reference/gallery.txt
/usr/share/doc/rest2web/html/reference/index.html
/usr/share/doc/rest2web/html/reference/index.txt
/usr/share/doc/rest2web/html/reference/indextree.html
/usr/share/doc/rest2web/html/reference/indextree.txt
/usr/share/doc/rest2web/html/reference/plugins.html
/usr/share/doc/rest2web/html/reference/plugins.txt
/usr/share/doc/rest2web/html/reference/smilies.html
/usr/share/doc/rest2web/html/reference/smilies.txt
/usr/share/doc/rest2web/html/reference/todo.html
/usr/share/doc/rest2web/html/reference/todo.txt
/usr/share/doc/rest2web/html/reference/uservalues.html
/usr/share/doc/rest2web/html/reference/uservalues.txt