diff --git a/docs/chapters/click_sprite.md b/docs/chapters/click_sprite.md
index d5c9fe8..51f8613 100644
--- a/docs/chapters/click_sprite.md
+++ b/docs/chapters/click_sprite.md
@@ -5,4 +5,13 @@ tags:
   - sprite
 ---
 
-# Respond to clicking on a sprite.
+# Respond to clicking on a sprite
+
+This page is a stub.
+
+```rust
+fn main() {
+    let mut app = create_app();
+    app.run();
+}
+```
diff --git a/docs/chapters/respond_to_key_press.md b/docs/chapters/respond_to_key_press.md
index fb61e28..3930e39 100644
--- a/docs/chapters/respond_to_key_press.md
+++ b/docs/chapters/respond_to_key_press.md
@@ -78,7 +78,7 @@ fn test_player_responds_to_key_press() {
 fn main() {
     let mut app = create_app();
     let add_camera_fn = |mut commands: Commands| {
-        commands.spawn(Camera2d::default());
+        commands.spawn(Camera2d);
     };
     app.add_systems(Startup, add_camera_fn);
     app.add_plugins(DefaultPlugins);
diff --git a/docs/chapters/use_game_state.md b/docs/chapters/use_game_state.md
index 0a4cf36..5960326 100644
--- a/docs/chapters/use_game_state.md
+++ b/docs/chapters/use_game_state.md
@@ -4,3 +4,12 @@ tags:
 ---
 
 # Use game state
+
+This page is a stub.
+
+```rust
+fn main() {
+    let mut app = create_app();
+    app.run();
+}
+```
diff --git a/docs/chapters/use_resources.md b/docs/chapters/use_resources.md
index 8c19306..1b31303 100644
--- a/docs/chapters/use_resources.md
+++ b/docs/chapters/use_resources.md
@@ -4,3 +4,13 @@ tags:
 ---
 
 # Use resources
+
+This page is a stub.
+
+```rust
+fn main() {
+    let mut app = create_default_app();
+    app.add_plugins(DefaultPlugins);
+    app.run();
+}
+```
diff --git a/docs/chapters/use_window_title.md b/docs/chapters/use_window_title.md
index 9eadfcf..b606677 100644
--- a/docs/chapters/use_window_title.md
+++ b/docs/chapters/use_window_title.md
@@ -5,3 +5,12 @@ tags:
 ---
 
 # Use window title
+
+This page is a stub.
+
+```rust
+fn main() {
+    let mut app = create_app();
+    app.run();
+}
+```