(U) Quotation: [ call -> stop ]
(O) Word: update-ui-loop
(O) Word: update-ui
(O) Word: redraw-worlds
(O) Word: draw-world
(O) Word: (gl-error)
(O) Method: M\ object throw
(U) Quotation: [
        63 special-object error-thread set-global
        continuation -> error-continuation set-global rethrow
    ]