KeepRemoveFlag/happy

HTML	RESULT
{sequence 25, push='mySequence'}
{pull mySequence, make, happy} {$sequence} {/pull}	1 7 10 13 19 23
{pull mySequence, keep, happy} {$sequence} {/pull}	1 7 10 13 19 23
{pull mySequence, remove, happy} {$sequence} {/pull}	2 3 4 5 6 8 9 11 12 14 15 16 17 18 20 21 22 24 25
{pull mySequence, flag, happy} {$sequence} {/pull}	1 0 0 0 0 0 1 0 0 1 0 0 1 0 0 0 0 0 1 0 0 0 1 0 0