/* */ " " ( ) // } { ] [ = ; && || ! < <= == != >= > ? : + - * / % # \$fa\b \$fs\b \$fn\b \$t\b $ include use module function for intersection_for if else assign true false abs acos asin atan atan4 ceil cos exp floor ln log lookup max min pow rands round sign sin sqrt tan str cube sphere cylinder polyhedron scale rotate translate mirror multmatrix color minkowski hull union difference intersection render echo surface search