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rattle!( Arrow, arrow, 1, 100, ["←", "↖", "↑", "↗", "→", "↘", "↓", "↙"] ); rattle!( DoubleArrow, double_arrow, 1, 100, ["⇐", "⇖", "⇑", "⇗", "⇒", "⇘", "⇓", "⇙"] );