diff --git a/src/engine_api.rs b/src/engine_api.rs
index 7156a2a1..e8f4a888 100644
--- a/src/engine_api.rs
+++ b/src/engine_api.rs
@@ -21,7 +21,6 @@ use crate::Array;
 #[cfg(not(feature = "no_object"))]
 use crate::Map;
 
-/// Engine public API
 impl Engine {
     /// Register a custom function with the [`Engine`].
     ///
@@ -193,9 +192,8 @@ impl Engine {
     /// }
     ///
     /// impl TestStruct {
-    ///     fn new() -> Self                    { Self { field: 1 } }
-    ///
-    ///     fn update(&mut self, offset: i64)   { self.field += offset; }
+    ///     fn new() -> Self { Self { field: 1 } }
+    ///     fn update(&mut self, offset: i64) { self.field += offset; }
     /// }
     ///
     /// # fn main() -> Result<(), Box<rhai::EvalAltResult>> {
@@ -294,8 +292,7 @@ impl Engine {
     /// }
     ///
     /// impl TestStruct {
-    ///     fn new() -> Self                { Self { field: 1 } }
-    ///
+    ///     fn new() -> Self { Self { field: 1 } }
     ///     // Even a getter must start with `&mut self` and not `&self`.
     ///     fn get_field(&mut self) -> i64  { self.field }
     /// }
@@ -343,7 +340,6 @@ impl Engine {
     ///
     /// impl TestStruct {
     ///     fn new() -> Self { Self { field: 1 } }
-    ///
     ///     // Even a getter must start with `&mut self` and not `&self`.
     ///     fn get_field(&mut self) -> Result<i64, Box<EvalAltResult>> {
     ///         Ok(self.field)
@@ -386,9 +382,8 @@ impl Engine {
     /// }
     ///
     /// impl TestStruct {
-    ///     fn new() -> Self                        { Self { field: 1 } }
-    ///
-    ///     fn set_field(&mut self, new_val: i64)   { self.field = new_val; }
+    ///     fn new() -> Self { Self { field: 1 } }
+    ///     fn set_field(&mut self, new_val: i64) { self.field = new_val; }
     /// }
     ///
     /// # fn main() -> Result<(), Box<rhai::EvalAltResult>> {
@@ -436,7 +431,6 @@ impl Engine {
     ///
     /// impl TestStruct {
     ///     fn new() -> Self { Self { field: 1 } }
-    ///
     ///     fn set_field(&mut self, new_val: i64) -> Result<(), Box<EvalAltResult>> {
     ///         self.field = new_val;
     ///         Ok(())
@@ -486,12 +480,10 @@ impl Engine {
     /// }
     ///
     /// impl TestStruct {
-    ///     fn new() -> Self                        { Self { field: 1 } }
-    ///
+    ///     fn new() -> Self { Self { field: 1 } }
     ///     // Even a getter must start with `&mut self` and not `&self`.
-    ///     fn get_field(&mut self) -> i64          { self.field }
-    ///
-    ///     fn set_field(&mut self, new_val: i64)   { self.field = new_val; }
+    ///     fn get_field(&mut self) -> i64 { self.field }
+    ///     fn set_field(&mut self, new_val: i64) { self.field = new_val; }
     /// }
     ///
     /// # fn main() -> Result<(), Box<rhai::EvalAltResult>> {
@@ -543,7 +535,6 @@ impl Engine {
     ///
     /// impl TestStruct {
     ///     fn new() -> Self { Self { fields: vec![1, 2, 3, 4, 5] } }
-    ///
     ///     // Even a getter must start with `&mut self` and not `&self`.
     ///     fn get_field(&mut self, index: i64) -> i64 { self.fields[index as usize] }
     /// }
@@ -617,7 +608,6 @@ impl Engine {
     ///
     /// impl TestStruct {
     ///     fn new() -> Self { Self { fields: vec![1, 2, 3, 4, 5] } }
-    ///
     ///     // Even a getter must start with `&mut self` and not `&self`.
     ///     fn get_field(&mut self, index: i64) -> Result<i64, Box<EvalAltResult>> {
     ///         Ok(self.fields[index as usize])
@@ -691,7 +681,6 @@ impl Engine {
     ///
     /// impl TestStruct {
     ///     fn new() -> Self { Self { fields: vec![1, 2, 3, 4, 5] } }
-    ///
     ///     fn set_field(&mut self, index: i64, value: i64) { self.fields[index as usize] = value; }
     /// }
     ///
@@ -765,7 +754,6 @@ impl Engine {
     ///
     /// impl TestStruct {
     ///     fn new() -> Self { Self { fields: vec![1, 2, 3, 4, 5] } }
-    ///
     ///     fn set_field(&mut self, index: i64, value: i64) -> Result<(), Box<EvalAltResult>> {
     ///         self.fields[index as usize] = value;
     ///         Ok(())
@@ -841,11 +829,9 @@ impl Engine {
     /// }
     ///
     /// impl TestStruct {
-    ///     fn new() -> Self                                { Self { fields: vec![1, 2, 3, 4, 5] } }
-    ///
+    ///     fn new() -> Self { Self { fields: vec![1, 2, 3, 4, 5] } }
     ///     // Even a getter must start with `&mut self` and not `&self`.
-    ///     fn get_field(&mut self, index: i64) -> i64      { self.fields[index as usize] }
-    ///
+    ///     fn get_field(&mut self, index: i64) -> i64 { self.fields[index as usize] }
     ///     fn set_field(&mut self, index: i64, value: i64) { self.fields[index as usize] = value; }
     /// }
     ///