diff --git a/ch10_network.adoc b/ch10_network.adoc
index acf314a9..18dfcaef 100644
--- a/ch10_network.adoc
+++ b/ch10_network.adoc
@@ -839,7 +839,7 @@ server-generated filters, called Golomb-Rice Coded Sets (GCS).
 
 ==== Golomb-Rice Coded Sets (GCS)
 
-Imagine that Alice wants to send a list of numbers to Bob.  The simple
+Imagine ((("Bitcoin network", "compact block filters", "GCS (Golomb-Rice coded sets)", id="bitcoin-network-compact-filter-gcs")))((("compact block filters", "GCS (Golomb-Rice coded sets)", id="compact-block-filter-gcs")))((("blocks", "compact block filters", "GCS (Golomb-Rice coded sets)", id="block-compact-filter-gcs")))((("GCS (Golomb-Rice coded sets)", id="gcs-filter")))that Alice wants to send a list of numbers to Bob.  The simple
 way to do that is to just send him the entire list of numbers:
 
 ----
@@ -938,7 +938,7 @@ of space for every number.
 
 Golomb coding provides that facility.  Rice coding is a subset of Golomb
 coding that's more convenient to use in some situations, including the
-application of Bitcoin block filters.
+application of Bitcoin ((("Bitcoin network", "compact block filters", "GCS (Golomb-Rice coded sets)", startref="bitcoin-network-compact-filter-gcs")))((("compact block filters", "GCS (Golomb-Rice coded sets)", startref="compact-block-filter-gcs")))((("blocks", "compact block filters", "GCS (Golomb-Rice coded sets)", startref="block-compact-filter-gcs")))((("GCS (Golomb-Rice coded sets)", startref="gcs-filter")))block filters.
 
 ==== What Data to Include in a Block Filter