diff --git a/src/controller/key_event_matcher/rename.rs b/src/controller/key_event_matcher/rename.rs
index 8083968..425465d 100644
--- a/src/controller/key_event_matcher/rename.rs
+++ b/src/controller/key_event_matcher/rename.rs
@@ -8,7 +8,7 @@ use termion::event::Key as TKey;
 use crate::controller::EventQueue;
 
 impl<W: Write> EventQueue<W> {
-    /// TODO
+    /// Remove the last character from the string.
     fn pop_char(name: &str) -> Cow<'_, str> {
         if name.is_empty() {
             return Cow::Borrowed(name);
@@ -18,7 +18,7 @@ impl<W: Write> EventQueue<W> {
         Cow::Owned(chars.collect())
     }
 
-    /// TODO
+    /// Add a character to the string, if it is not a control character.
     fn push_char<'a>(name: &'a str, chr: &char) -> Cow<'a, str> {
         if chr.is_control() {
             return Cow::Borrowed(name);
@@ -26,7 +26,7 @@ impl<W: Write> EventQueue<W> {
         Cow::Owned(format!("{name}{chr}"))
     }
 
-    /// TODO
+    /// Rename the current file to the new name.
     pub fn do_rename_current_file(&mut self, new_name: &str) -> Option<()> {
         let new_path = self.pager.current_entry.with_file_name(new_name);
         if !new_path.exists() {
@@ -35,7 +35,7 @@ impl<W: Write> EventQueue<W> {
         Some(())
     }
 
-    /// TODO
+    /// Handle the rename input, and return the new name.
     pub fn do_handle_rename_input<'a>(&mut self, new_name: &'a str, key: &TKey) -> Cow<'a, str> {
         match key {
             TKey::Backspace => return Self::pop_char(new_name),
diff --git a/src/controller/mod.rs b/src/controller/mod.rs
index 551ce57..1f0ccdd 100644
--- a/src/controller/mod.rs
+++ b/src/controller/mod.rs
@@ -23,7 +23,7 @@ mod key_event_handler;
 mod key_event_matcher;
 mod resize_event_handler;
 
-/// TODO
+/// Entrie, a struct that represents a file or directory.
 pub struct Entrie {
     pub path: PathBuf,
     pub display_text: String,
@@ -115,7 +115,7 @@ impl<W: Write> EventQueue<W> {
 }
 
 impl Entrie {
-    /// TODO
+    /// Create a new `Entrie`.
     pub fn new(path: impl AsRef<Path>, display_text: impl Into<String>) -> Self {
         Self {
             path: path.as_ref().to_path_buf(),
diff --git a/src/model/event.rs b/src/model/event.rs
index 5bdf307..26a7dd1 100644
--- a/src/model/event.rs
+++ b/src/model/event.rs
@@ -40,7 +40,7 @@ impl From<&String> for Key {
 }
 
 impl Key {
-    /// TODO
+    /// Returns the inner termion key event.
     pub fn inner(&self) -> &TKey {
         match &self.inner {
             termion::event::Event::Key(tkey) => tkey,
diff --git a/src/view/mode.rs b/src/view/mode.rs
index 3ae9c62..037eed1 100644
--- a/src/view/mode.rs
+++ b/src/view/mode.rs
@@ -1,17 +1,17 @@
 // SPDX-License-Identifier: MIT
 // Copyright (c) 2024 Awiteb <a@4rs.nl>
 
-/// TODO
+/// Mode of the pager.
 #[derive(Clone)]
 pub enum Mode {
-    /// TODO
+    /// Normal mode. Exploring the file system.
     Normal,
-    /// TODO
+    /// Rename mode. Renaming a file.
     Rename(String),
 }
 
 impl Mode {
-    /// TODO
+    /// Returns the new name of the file, if in rename mode.
     pub fn new_name(&self) -> Option<&str> {
         match &self {
             Mode::Rename(new_name) => Some(new_name),