Edited ch06_transactions.adoc with Atlas code editor

ch06_transactions.adoc

@@ -412,7 +412,7 @@ The use and meaning of this field has changed over time.
 [[original_tx_replacement]]
 ===== Original sequence-based transaction replacement
 
-The sequence field was originally intended to allow creation of
+The ((("sequence-based transaction replacement", id="sequence-replace")))sequence field was originally intended to allow creation of
 multiple versions of the same transaction, with later versions replacing
 earlier versions as candidates for confirmation.  The sequence number
 tracked the version of the transaction.
@@ -500,7 +500,7 @@ sequence-based transaction replacement was disabled in an early version
 of the Bitcoin software.  For several years, Bitcoin full nodes would
 not allow an unconfirmed transaction containing a particular input (as
 indicated by its outpoint) to be replaced by a different transaction
-containing the same input.  However, that situation didn't last forever.
+containing the same input.  However, that situation didn't ((("sequence-based transaction replacement", startref="sequence-replace")))last forever.
 
 [[sequence-bip125]]
 ===== Opt-in transaction replacement signaling