FYI, the default file errors out!
(torus :z 60 30 | twist :y 0.07 | rotate :pi :y t :z 0.05 | move :x 50 | mirror :r 10 :x | fresnel | slow 0.25)
error: script:16:1: compile error: unknown symbol twist
in evaluate [lib/evaluator.janet] on line 81, column 7
in bauble-evaluator/evaluate [lib/init.janet] on line 8, column 12