diff --git a/chapters/book_thrills.asc b/chapters/book_thrills.asc
index c1212b5..9cad0f0 100644
--- a/chapters/book_thrills.asc
+++ b/chapters/book_thrills.asc
@@ -12,12 +12,13 @@ culpa qui officia deserunt mollit anim id est laborum.
 include::{datadir}/tracks.csv[]
 |===
 
-Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor
-incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis
-nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
-Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu
-fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in
-culpa qui officia ((deserunt)) mollit anim id est laborum.
+Lorem (((Something, Whatever, Lorem)))ipsum dolor sit amet, consectetur
+adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore
+magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco
+laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in
+reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
+pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa
+qui officia ((deserunt)) mollit anim id est laborum.
 
 [plantuml,diagram-classes,png]
 .UIResponder Hierarchy Diagram
diff --git a/chapters/index.asc b/chapters/index.asc
new file mode 100644
index 0000000..0bf8fce
--- /dev/null
+++ b/chapters/index.asc
@@ -0,0 +1,3 @@
+[index]
+= Index
+
diff --git a/images/diagram-classes.png b/images/diagram-classes.png
index 1d268fd..1189a5d 100644
Binary files a/images/diagram-classes.png and b/images/diagram-classes.png differ
diff --git a/images/diagram-state.png b/images/diagram-state.png
index c0558ef..472a440 100644
Binary files a/images/diagram-state.png and b/images/diagram-state.png differ
diff --git a/master.asc b/master.asc
index d65462d..0c54ed6 100644
--- a/master.asc
+++ b/master.asc
@@ -60,3 +60,7 @@ include::chapters/bibliography.asc[]
 
 include::chapters/colophon.asc[]
 
+ifdef::backend-pdf[]
+include::chapters/index.asc[]
+endif::[]
+