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# Chapter Five: Controlling Bitcoin Transactions
The `bitcoin-cli` interface is ultimately limited. Nonetheless, it contains a few other options including sequence (which is used for RBF), data (for OP_RETURNs), and locktime (for Locktime). These can considerably empower your basic Bitcoin transactions.
Sending a transaction isn't always the end of the story. Using the RBF and CPFP protocols, a developer can continue to control the transaction after it's been sent, to improve efficiency or to recover transactions that get stuck.
## Objectives for This Section
After working through this chapter, a developer will be able to:
* Decide Whether RBF or CPFP Might Help a Transaction
* Create Transactions with Data
* Create Transactions with Locktimes
* Create Replacement Transaction Using RBF
* Create New Transactions Using CPFP
Supporting objectives include the ability to:
* Understand the Mempool
* Use RBF or CPFP to Free Up a Stuck Transaction
* Understand the Difference Between RBF and CPFP
* Plan for the Power of RBF
* Plan for the Power of OP_RETURN
* Plan for the Power of Locktime
## Table of Contents
* [Part One: Watching for Stuck Transactions](5_1_Watching_for_Stuck_Transactions.md)
* [Part Two: Resending a Transaction with RBF](5_2_Resending_a_Transaction_with_RBF.md)
* [Part Three: Funding a Transaction with CPFP](5_3_Funding_a_Transaction_with_CPFP.md)
* [Part Four: Sending a Raw Transaction with Data](5_4_Sending_a_Raw_Transaction_with_Data.md)
* [Part Five: Sending a Raw Transaction with a Locktime](5_5_Sending_a_Raw_Transaction_with_a_Locktime.md)