HTML RESULT 
{sequence 25, push='mySequence'}
{pull mySequence, make,   tribonacci} {$sequence} {/pull}
0 0 1 1 2 4 7 13 24 44 81 149 274 504 927 1705 3136 5768 10609 19513 35890 66012 121415 223317 410744
{pull mySequence, keep,   tribonacci} {$sequence} {/pull}
1 2 4 7 13 24
{pull mySequence, remove, tribonacci} {$sequence} {/pull}
3 5 6 8 9 10 11 12 14 15 16 17 18 19 20 21 22 23 25
{pull mySequence, flag,   tribonacci} {$sequence} {/pull}
1 1 0 1 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0