qhull(1) on Linux
The text 214f1ef241bd, as Arch Linux 2026-11-01, Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it. The page shows this text now.
convex hull, Delaunay triangulation, Voronoi diagram, halfspace intersection about a point, hull volume, facet area