4 files changed, 14 insertions, 0 deletions
diff --git a/src/input/button_state.rs b/src/input/button_state.rs
index e8845cc7..988043ba 100644
--- a/src/input/button_state.rs
+++ b/src/input/button_state.rs
@@ -1,5 +1,9 @@
+/// The state of a button.
 #[derive(Debug, Hash, Ord, PartialOrd, PartialEq, Eq, Clone, Copy)]
 pub enum ButtonState {
+    /// The button is pressed.
     Pressed,
+
+    /// The button is __not__ pressed.
     Released,
 }
diff --git a/src/input/keyboard.rs b/src/input/keyboard.rs
index 2b0188ff..57c24484 100644
--- a/src/input/keyboard.rs
+++ b/src/input/keyboard.rs
@@ -1,3 +1,4 @@
+//! Build keyboard events.
 mod event;
 mod key_code;
 
diff --git a/src/input/mouse.rs b/src/input/mouse.rs
index 49a62961..d37f5b96 100644
--- a/src/input/mouse.rs
+++ b/src/input/mouse.rs
@@ -1,3 +1,4 @@
+//! Build mouse events.
 mod button;
 mod event;
 
diff --git a/src/input/mouse/button.rs b/src/input/mouse/button.rs
index c51bedfc..aeb8a55d 100644
--- a/src/input/mouse/button.rs
+++ b/src/input/mouse/button.rs
@@ -1,7 +1,15 @@
+/// The button of a mouse.
 #[derive(Debug, Hash, PartialEq, Eq, Clone, Copy)]
 pub enum Button {
+    /// The left mouse button.
     Left,
+
+    /// The right mouse button.
     Right,
+
+    /// The middle (wheel) button.
     Middle,
+
+    /// Some other button.
     Other(u8),
 }