1 = single-play no return block 2 = single-play return block 3 = defined-replay no return block 4 = defined-replay return block no number = 1 (for compatibility, once this is implemented do not use empty-type blocks)
1 = single-play no return block
2 = single-play return block
3 = defined-replay no return block
4 = defined-replay return block
no number = 1 (for compatibility, once this is implemented do not use empty-type blocks)