diff --git a/examples/version.rs b/examples/version.rs
index a52a118..845fb34 100644
--- a/examples/version.rs
+++ b/examples/version.rs
@@ -3,5 +3,5 @@
 // that can be found in the LICENSE file.
 
 fn main() {
-  println!("{}", env!("CARGO_PKG_VERSION"));
+    println!("{}", env!("CARGO_PKG_VERSION"));
 }
diff --git a/src/app.rs b/src/app.rs
index 4de670b..f6023c2 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -670,7 +670,7 @@ impl<'a> App<'a> {
                     }
 
                     // Common input key
-                    // h ... toggel help window.
+                    // h ... toggle help window.
                     Event::Key(KeyEvent {
                         code: KeyCode::Char('h'),
                         modifiers: KeyModifiers::NONE,
@@ -714,7 +714,7 @@ impl<'a> App<'a> {
                         modifiers: KeyModifiers::NONE,
                     }) => self.input_key_down(),
 
-                    // h ... toggel help window.
+                    // h ... toggle help window.
                     Event::Key(KeyEvent {
                         code: KeyCode::Char('h'),
                         modifiers: KeyModifiers::NONE,
@@ -803,8 +803,8 @@ impl<'a> App<'a> {
     // Not currently used.
     ///
     //fn get_input_mouse_event(&mut self, mouse_event: &MouseEvent) {
-    //    let mouse_event_tupple = (mouse_event.kind, mouse_event.modifiers);
-    //    if let (MouseEventKind::Down(MouseButton::Left), KeyModifiers::NONE) = mouse_event_tupple {
+    //    let mouse_event_tuple = (mouse_event.kind, mouse_event.modifiers);
+    //    if let (MouseEventKind::Down(MouseButton::Left), KeyModifiers::NONE) = mouse_event_tuple {
     //        self.mouse_click_left(mouse_event.column, mouse_event.row);
     //    }
     //}
diff --git a/src/help.rs b/src/help.rs
index 47107c3..9fe35a9 100644
--- a/src/help.rs
+++ b/src/help.rs
@@ -88,7 +88,7 @@ fn gen_help_text<'a>() -> Vec<Spans<'a>> {
         Spans::from(" - [F3] key  ... change output mode as output(stdout/stderr set.)"),
         // change use area
         Spans::from(" - [Tab] key ... toggle current area at history or watch."),
-        // filter text inpu
+        // filter text input
         Spans::from(" - [/] key ... filter history by string."),
         Spans::from(" - [*] key ... filter history by regex."),
         Spans::from(" - [ESC] key ... unfiltering."),
diff --git a/src/main.rs b/src/main.rs
index 6ef4acb..d9a90e7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -125,7 +125,7 @@ fn build_app() -> clap::Command<'static> {
         //     [-b,--batch]
         // .arg(
         //     Arg::with_name("batch")
-        //         .help("output exection results to stdout")
+        //         .help("output execution results to stdout")
         //         .short('b')
         //         .long("batch"),
         // )
diff --git a/src/output.rs b/src/output.rs
index 825d5b6..cc77f2e 100644
--- a/src/output.rs
+++ b/src/output.rs
@@ -677,7 +677,7 @@ fn get_word_diff_addline<'a>(
     match before_diffs {
         // Change Line.
         &Difference::Rem(ref before_diff_data) => {
-            // Craete Changeset at `Addlind` and `Before Diff Data`.
+            // Create Changeset at `Addlind` and `Before Diff Data`.
             let Changeset { diffs, .. } = Changeset::new(before_diff_data, &diff_data, " ");
 
             //
@@ -777,7 +777,7 @@ fn get_word_diff_remline<'a>(
     match after_diffs {
         // Change Line.
         &Difference::Add(ref after_diffs_data) => {
-            // Craete Changeset at `Addlind` and `Before Diff Data`.
+            // Create Changeset at `Addlind` and `Before Diff Data`.
             let Changeset { diffs, .. } = Changeset::new(&diff_data, after_diffs_data, " ");
 
             //