RosettaCodeData/Task/Animation/PicoLisp/animation-1.l

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#!/usr/bin/picolisp /usr/lib/picolisp/lib.l
(prin "^[[?9h") # Mouse reporting on
(setq Dir 1 Text (chop "Hello World! "))
(loop
(prin (do Dir (rot Text)))
(when (= "^[" (key 200))
(key) (key)
(when (= " " (key)) # Left button
(setq Dir (if (= 1 Dir) 12 1)) )
(key) (key) )
(do (length Text) (prin "^H")) )