/usr/lib/Wt/examples/codeview/ is in witty-examples 3.1.10-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/Wt/examples/codeview/CMakeLists.txt
/usr/lib/Wt/examples/codeview/CodeSession.C
/usr/lib/Wt/examples/codeview/CodeSession.h
/usr/lib/Wt/examples/codeview/CoderApplication.C
/usr/lib/Wt/examples/codeview/CoderApplication.h
/usr/lib/Wt/examples/codeview/CoderWidget.C
/usr/lib/Wt/examples/codeview/CoderWidget.h
/usr/lib/Wt/examples/codeview/ObserverWidget.C
/usr/lib/Wt/examples/codeview/ObserverWidget.h
/usr/lib/Wt/examples/codeview/coder.css
/usr/lib/Wt/examples/codeview/codingview
/usr/lib/Wt/examples/codeview/codingview.wt
/usr/lib/Wt/examples/codeview/prettify/
/usr/lib/Wt/examples/codeview/prettify/prettify.css
/usr/lib/Wt/examples/codeview/prettify/prettify.js
/usr/lib/Wt/examples/codeview/prettify/prettify.min.js
/usr/lib/Wt/examples/codeview/resources