diff --git a/clap_derive/src/lib.rs b/clap_derive/src/lib.rs
index 3e13d10e..468846fc 100644
--- a/clap_derive/src/lib.rs
+++ b/clap_derive/src/lib.rs
@@ -36,7 +36,12 @@ pub fn arg_enum(input: TokenStream) -> TokenStream {
     derives::derive_arg_enum(&input).into()
 }
 
-/// Generates the `Clap` impl.
+/// Generates the `Clap` implementation.
+///
+/// This is far less verbose than defining the [`App`] struct manually,
+/// receiving an instance of [`ArgMatches`] from conducting parsing, and then
+/// implementing a conversion code (usually `impl From<ArgMatches> for
+/// MyStruct`) to instantiate an instance of the user context struct.
 #[proc_macro_derive(Clap, attributes(clap))]
 #[proc_macro_error]
 pub fn clap(input: TokenStream) -> TokenStream {