diff --git a/src/rcore/modes.rs b/src/rcore/modes.rs
index 6ab69b8..a4fd908 100644
--- a/src/rcore/modes.rs
+++ b/src/rcore/modes.rs
@@ -307,7 +307,7 @@ impl Mode for RegularMode {
     /// Tries to extend the value.
     type ExtensionResult<A, E> = Result<A, E>;
 
-    /// Allows extending the value.
+    /// Keeps the value.
     type ExtensionSource<A> = A;
 
     fn bind<A0, A1, E, I>(
diff --git a/src/rstd/inlining/modes.rs b/src/rstd/inlining/modes.rs
index 01314e6..52a193f 100644
--- a/src/rstd/inlining/modes.rs
+++ b/src/rstd/inlining/modes.rs
@@ -1,12 +1,16 @@
 use super::*;
 
+/// [`Mode`] for [`InliningFactory`].
 pub struct InliningMode;
 
 impl Mode for InliningMode {
+    /// Keeps the parser.
     type ParseSuccess<A, I> = (A, I);
 
+    /// Always fails.
     type ExtensionResult<A, E> = E;
 
+    /// Discards the value.
     type ExtensionSource<A> = ();
 
     fn bind<A0, A1, E, I>(