diff --git a/ch06_transactions.adoc b/ch06_transactions.adoc
index 6b6a4dfc..daaaa071 100644
--- a/ch06_transactions.adoc
+++ b/ch06_transactions.adoc
@@ -599,7 +599,7 @@ The example transaction has two outputs.
 
 ==== Amount
 
-The first field of a specific output is its _amount_, also called
+The first((("transactions", "outputs", "amount field", id="transaction-output-amount")))((("outputs", "amount field", id="output-transaction-amount")))((("amount field (transaction outputs)", id="amount-field"))) field of a specific output is its _amount_, also called
 "value" in Bitcoin Core.  This is an 8-byte signed integer indicating
 the number of _satoshis_ to transfer.  A satoshi is the smallest unit of
 bitcoin that can be represented in an onchain Bitcoin transaction.
@@ -679,7 +679,7 @@ amounts of arbitrary data in the blockchain without increasing the size
 of its UTXO database.  Since the outputs are unspendable, they aren't
 uneconomical--any satoshis assigned to them become
 permanently unspendable--so allowing the amount to be zero ensures
-satoshis aren't being destroyed.
+satoshis aren't being ((("transactions", "outputs", "amount field", startref="transaction-output-amount")))((("outputs", "amount field", startref="output-transaction-amount")))((("amount field (transaction outputs)", startref="amount-field")))destroyed.
 
 ==== Output Scripts