diff --git a/src/rcore/modes.rs b/src/rcore/modes.rs
index bac533b..f2f1c6c 100644
--- a/src/rcore/modes.rs
+++ b/src/rcore/modes.rs
@@ -107,7 +107,9 @@ pub trait Mode {
     ) -> Self::ExtensionResult<AB, E>;
 }
 
+/// Type that a [`Mode`] associated with it.
 pub trait ParseMode {
+    /// Associated [`Mode`].
     type Mode: ?Sized + Mode;
 }