diff --git a/lib/common/src/gameplay_modes.rs b/lib/common/src/gameplay_modes.rs
index b35acc6..d0d204b 100644
--- a/lib/common/src/gameplay_modes.rs
+++ b/lib/common/src/gameplay_modes.rs
@@ -110,6 +110,7 @@ impl Stage{
 	pub fn into_inner(self)->(HashMap<CheckpointId,ModelId>,HashSet<ModelId>){
 		(self.ordered_checkpoints,self.unordered_checkpoints)
 	}
+	/// Returns true if the stage has no checkpoints.
 	#[inline]
 	pub const fn is_empty(&self)->bool{
 		self.is_complete(0,0)