image::images/mbc3_0603.png["BIP68 definition of sequence encoding"]
Note that any transaction that sets a relative timelock using sequence
also sends the signal for opt-in replace by fee ((("transactions", "inputs", startref="transaction-input")))((("inputs", startref="input-transaction")))((("transactions", "inputs", "sequence field", startref="transaction-input-sequence")))((("inputs", "sequence field", startref="input-transaction-sequence")))((("sequence field (transaction inputs)", startref="sequence-field")))((("relative timelocks", startref="relative-timelock")))as described in
also sends the signal for opt-in replace by fee ((("transactions", "inputs", startref="transaction-input")))((("inputs", startref="input-transaction")))((("transactions", "inputs", "sequence field", startref="transaction-input-sequence")))((("inputs", "sequence field", startref="input-transaction-sequence")))((("sequence field (transaction inputs)", startref="sequence-field")))as described in