/usr/include/Unidraw/Graphic/ is in ivtools-dev 1.2.11a1-11.
This file is owned by root:root, with mode 0o755.
..
/usr/include/Unidraw/Graphic/damage.h
/usr/include/Unidraw/Graphic/ellipses.h
/usr/include/Unidraw/Graphic/geomobjs.h
/usr/include/Unidraw/Graphic/graphic.h
/usr/include/Unidraw/Graphic/grblock.h
/usr/include/Unidraw/Graphic/lines.h
/usr/include/Unidraw/Graphic/picture.h
/usr/include/Unidraw/Graphic/polygons.h
/usr/include/Unidraw/Graphic/pspaint.h
/usr/include/Unidraw/Graphic/rasterrect.h
/usr/include/Unidraw/Graphic/splines.h
/usr/include/Unidraw/Graphic/ulabel.h
/usr/include/Unidraw/Graphic/ustencil.h
/usr/include/Unidraw/Graphic/util.h
/usr/include/Unidraw/Graphic/verts.h