ch-01: mentino splicing as 3rd channel txn type

01_introduction.asciidoc

@@ -27,7 +27,7 @@ Hash Function:: A cryptographic hash function is a mathematical algorithm that m
 
 Node:: A computer that participates in a network. A Lightning node is a computer that participates in the Lightning Network. A Bitcoin node is a computer that participates in the Bitcoin Network. Typically a Lightning Network user will run a Lightning node _and_ a Bitcoin node.
 
-On-Chain vs. Off-Chain:: A payment is "on-chain" if it is recorded as a transaction on the Bitcoin (or other underlying) blockchain. Payments sent via payment channels between Lightning nodes, and which are not visible in the underlying blockchain, are called "off-chain" payments. Usually in the Lightning Network, the only on-chain transactions are those used to open and close a Lightning payment channel.
+On-Chain vs. Off-Chain:: A payment is "on-chain" if it is recorded as a transaction on the Bitcoin (or other underlying) blockchain. Payments sent via payment channels between Lightning nodes, and which are not visible in the underlying blockchain, are called "off-chain" payments. Usually in the Lightning Network, the only on-chain transactions are those used to open and close a Lightning payment channel. A third type of channel modifying transaction exists, called splicing, which can be used to add/remove the amount of funds committed in a channel.
 
 Payment:: When value is exchanged on the Lightning Network, we call this a "payment" as compared to a "transaction" on the Bitcoin blockchain.