scene:wait

(scene:wait v)

Blocks until the viewer's window is closed, so a script outlives its last form. A REPL needs none of this. 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:wait *v*)