scene:clear
(scene:clear v)
Removes every solid from the viewer, releasing their GPU buffers. The grid, the axes and the camera are untouched. Part of the scene package, a 3-D viewer for geom solids written in rontolisp over metal and appkit and loaded on first use: macOS (java -jar, the rontolisp binary, or a compiled .class / .jar; never a .wasm), with a display. See the solid modeling guide.
CL-USER> (scene:clear *v*)
NIL