diff --git a/src/core/handle.rs b/src/core/handle.rs
index a8151804..957ce099 100644
--- a/src/core/handle.rs
+++ b/src/core/handle.rs
@@ -10,6 +10,7 @@ pub trait Handle {
     }
 }
 
+/// Implement the `Handle` trait.
 #[macro_export] macro_rules! handle {
     ($T:ty) => {
         impl Handle for $T {}
@@ -70,12 +71,14 @@ pub fn handle_keymap <T> (
     Ok(false)
 }
 
+/// Define a key binding.
 #[macro_export] macro_rules! key {
     ($k:ident $(($char:literal))?, $m:ident, $n: literal, $d: literal, $f: expr) => {
         (KeyCode::$k $(($char))?, KeyModifiers::$m, $n, $d, &$f)
     };
 }
 
+/// Define a keymap.
 #[macro_export] macro_rules! keymap {
     ($T:ty { $([$k:ident $(($char:literal))?, $m:ident, $n: literal, $d: literal, $f: expr]),* $(,)? }) => {
         &[
diff --git a/src/core/render.rs b/src/core/render.rs
index 4964a421..afb7a6db 100644
--- a/src/core/render.rs
+++ b/src/core/render.rs
@@ -24,6 +24,7 @@ pub trait Render: Send {
     }
 }
 
+/// Implement the `Render` trait.
 #[macro_export] macro_rules! render {
     ($T:ty) => {
         impl Render for $T {}
diff --git a/src/jack/ports.rs b/src/jack/ports.rs
index 4fa575a6..a9b122aa 100644
--- a/src/jack/ports.rs
+++ b/src/jack/ports.rs
@@ -51,6 +51,7 @@ pub trait Ports {
     }
 }
 
+/// Implement the `Ports` trait.
 #[macro_export] macro_rules! ports {
     ($T:ty $({ $(audio: {
         $(ins:  |$ai_arg:ident|$ai_impl:expr,)?
diff --git a/src/main.rs b/src/main.rs
index 0c358a74..612e3638 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -19,6 +19,7 @@ pub mod jack;
 
 use crate::{core::*, model::*};
 
+/// Application entrypoint.
 pub fn main () -> Usually<()> {
     let mut app = App::default();
 
diff --git a/src/model/phrase.rs b/src/model/phrase.rs
index f8b11e1b..023072e6 100644
--- a/src/model/phrase.rs
+++ b/src/model/phrase.rs
@@ -1,5 +1,6 @@
 use crate::core::*;
 
+/// Define a MIDI phrase.
 #[macro_export] macro_rules! phrase {
     ($($t:expr => $msg:expr),* $(,)?) => {{
         let mut phrase = BTreeMap::new();
diff --git a/src/model/sampler.rs b/src/model/sampler.rs
index 7f5be3bc..cd20d9b8 100644
--- a/src/model/sampler.rs
+++ b/src/model/sampler.rs
@@ -109,6 +109,7 @@ impl Sampler {
     }
 }
 
+/// Load sample from WAV and assign to MIDI note.
 #[macro_export] macro_rules! sample {
     ($note:expr, $name:expr, $src:expr) => {
         {
diff --git a/src/view.rs b/src/view.rs
index c3991a34..6b721a40 100644
--- a/src/view.rs
+++ b/src/view.rs
@@ -17,6 +17,7 @@ use crate::{render, App, core::*};
 
 render!(App |self, buf, area| {
     let Rect { x, mut y, width, height } = area;
+    return Ok(area);
 
     y = y + TransportView {
         timebase: &self.timebase,