diff --git a/graphs/graphs.ms b/graphs/graphs.ms
index 13d3fa5..09e52a1 100644
--- a/graphs/graphs.ms
+++ b/graphs/graphs.ms
@@ -279,9 +279,14 @@ cars_by_name = cars.new_index "name", do |car|
 end
 .SOURCE
 Once the index has been created, every added or modified entry in the database will be indexed.
+Adding an index (basic index, partition or tag) provides an object used to manipulate the database based on this index.
+Let's call it an
+.I "index object" .
 .QE
 .
-Adding an index (basic index, partition or tag) provides an object used to manipulate the database based on this index.
+The
+.I "index object"
+has several useful functions.
 .QP
 .SOURCE Ruby ps=10
 # Retrieve the car named "Corvet".