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+- A new RPC, `submitpackage`, has been added. It can be used to submit a list of raw hex
+ transactions to the mempool to be evaluated as a package using consensus and mempool policy rules.
+These policies include package CPFP, allowing a child with high fees to bump a parent below the
+mempool minimum feerate (but not minimum relay feerate).
+
+ - Warning: successful submission does not mean the transactions will propagate throughout the
+ network, as package relay is not supported.
+
+ - Not all features are available. The package is limited to a child with all of its
+ unconfirmed parents, and no parent may spend the output of another parent. Also, package
+ RBF is not supported. Refer to doc/policy/packages.md for more details on package policies
+ and limitations.
+
+ - This RPC is experimental. Its interface may change.