diff --git a/appb_errata.adoc b/appb_errata.adoc
index 75288d5d..ce9f228b 100644
--- a/appb_errata.adoc
+++ b/appb_errata.adoc
@@ -1,7 +1,7 @@
 [appendix]
 == Errata to the Bitcoin Whitepaper
 
-This appendix contains a description of known problems in Satoshi Nakamoto’s paper, "Bitcoin:
+This ((("Bitcoin whitepaper", "errata", id="bitcoin-whitepaper-errata")))((("whitepaper (Bitcoin)", "errata", id="whitepaper-errata")))appendix contains a description of known problems in Satoshi Nakamoto’s paper, "Bitcoin:
 A Peer-to-Peer Electronic Cash System," as well as notes on terminology
 changes and how Bitcoin's implementation differs from that described in
 the paper.
@@ -84,7 +84,7 @@ than about 30% of the network."
 === Transactions
 
 ____
-"We define an electronic coin as a chain of digital signatures. Each
+"We define((("transactions", "errata in Bitcoin whitepaper", id="transaction-errata"))) an electronic coin as a chain of digital signatures. Each
 owner transfers the coin to the next by digitally signing a hash of the
 previous transaction and the public key of the next owner and adding
 these to the end of the coin."
@@ -101,13 +101,13 @@ in Bitcoin to date require providing at least one signature. So instead
 of saying "a chain of digital signatures" it is more correct to say
 "a chain of encumbrances." Given that transactions often have more
 than one input and more than one output, the structure is not very
-chain-like; it’s more accurately described as a directed acyclic graph
+chain-like; it’s more accurately described as a directed acyclic ((("transactions", "errata in Bitcoin whitepaper", startref="transaction-errata")))graph
 (DAG).
 
 === Proof of Work
 
 ____
-"we implement the proof-of-work by incrementing a nonce in the block
+"we((("Proof-of-Work algorithm", "errata in Bitcoin whitepaper", id="proof-errata"))) implement the proof-of-work by incrementing a nonce in the block
 until a value is found that gives the block’s hash the required zero
 bits."
 ____
@@ -148,12 +148,12 @@ Further, the average implemented in Bitcoin targets an average number of
 blocks per two weeks (not per hour as might be implied by the text).
 Other implemented rules may further slow adjustments, such as a rule
 that the adjustment cannot increase block production speed by more than
-300% per period, nor slow it by more than 75%.
+300% per period, nor slow it by more ((("Proof-of-Work algorithm", "errata in Bitcoin whitepaper", startref="proof-errata")))than 75%.
 
 === Reclaiming Disk Space
 
 ____
-"Once the latest transaction in a coin is buried under enough blocks, the
+"Once the ((("disk space", "reclaiming")))((("reclaiming", "disk space")))((("blocks", "reclaiming disk space")))latest transaction in a coin is buried under enough blocks, the
 spent transactions before it can be discarded to save disk space"
 ____
 
@@ -168,7 +168,7 @@ nodes will need to process all transactions.
 === Simplified Payment Verification
 
 ____
-"One strategy to protect against this would be to accept alerts from
+"One strategy((("payment verification", "errata in Bitcoin whitepaper")))((("verifying payment", "errata in Bitcoin whitepaper"))) to protect against this would be to accept alerts from
 network nodes when they detect an invalid block, prompting the user’s
 software to download the full block and alerted transactions to confirm
 the inconsistency."
@@ -184,7 +184,7 @@ the past.
 === Privacy
 
 ____
-"Some linking is still unavoidable with multi-input transactions, which
+"Some linking((("privacy", "errata in Bitcoin whitepaper"))) is still unavoidable with multi-input transactions, which
 necessarily reveal that their inputs were owned by the same owner"
 ____
 
@@ -203,7 +203,7 @@ it has been in use since 2015.
 === Calculations
 
 ____
-"The receiver generates a new key pair and gives the public key to the
+"The receiver ((("calculations", "errata in Bitcoin whitepaper")))generates a new key pair and gives the public key to the
 sender shortly before signing. This prevents the sender from preparing a
 chain of blocks ahead of time by working on it continuously until he is
 lucky enough to get far enough ahead, then executing the transaction at
@@ -238,6 +238,6 @@ into a single document.
 https://oreil.ly/xZeBR[CC0] 1.0 Universal
 Public Domain Dedication
 
-For updates made after the publication of this book, please see the
+For updates made ((("Bitcoin whitepaper", "errata", startref="bitcoin-whitepaper-errata")))((("whitepaper (Bitcoin)", "errata", startref="whitepaper-errata")))after the publication of this book, please see the
 https://oreil.ly/ygExa[Original
 document].