{cycle $a = array("red", "green", "blue")}
red: {$a}
{increment $a}
green: {$a}
{increment $a}
blue: {$a}
{increment $a}
red: {$a}
{decrement $a}
blue: {$a}
{decrement $a}
green: {$a}
{reset $a}
red: {$a}
{increment $a}
{reset $a}
red: {$a}