/usr/share/doc/xviewg/examples/extensions/ is in xview-examples 3.2p1.4-28.1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/xviewg/examples/extensions/Bitmap.c
/usr/share/doc/xviewg/examples/extensions/Image.c
/usr/share/doc/xviewg/examples/extensions/Logo.c
/usr/share/doc/xviewg/examples/extensions/Makefile
/usr/share/doc/xviewg/examples/extensions/bitmap.c
/usr/share/doc/xviewg/examples/extensions/bitmap.h
/usr/share/doc/xviewg/examples/extensions/bitmap_impl.h
/usr/share/doc/xviewg/examples/extensions/image.c
/usr/share/doc/xviewg/examples/extensions/image.h
/usr/share/doc/xviewg/examples/extensions/image_impl.h
/usr/share/doc/xviewg/examples/extensions/logo.c
/usr/share/doc/xviewg/examples/extensions/logo.h
/usr/share/doc/xviewg/examples/extensions/logo_impl.h
/usr/share/doc/xviewg/examples/extensions/panel_items/
/usr/share/doc/xviewg/examples/extensions/panel_items/wizzy.c
/usr/share/doc/xviewg/examples/extensions/panel_items/wizzy.h
/usr/share/doc/xviewg/examples/extensions/panel_items/wizzy_data.c