diff --git a/ablescript/src/interpret.rs b/ablescript/src/interpret.rs
index 61a5065..516b681 100644
--- a/ablescript/src/interpret.rs
+++ b/ablescript/src/interpret.rs
@@ -201,7 +201,7 @@ impl ExecEnv {
                 self.decl_var(
                     &iden.iden,
                     Value::Functio(Functio::AbleFunctio {
-                        params: params.iter().map(|iden| iden.iden.to_string()).collect(),
+                        params: params.iter().map(|iden| iden.iden.to_owned()).collect(),
                         body: body.block.to_owned(),
                     }),
                 );
diff --git a/ablescript/src/parser.rs b/ablescript/src/parser.rs
index 49ade13..e0debe2 100644
--- a/ablescript/src/parser.rs
+++ b/ablescript/src/parser.rs
@@ -558,7 +558,7 @@ mod tests {
                             rhs: Box::new(Expr {
                                 kind: ExprKind::BinOp {
                                     lhs: Box::new(Expr {
-                                        kind: ExprKind::Variable("a".to_string()),
+                                        kind: ExprKind::Variable("a".to_owned()),
                                         span: 5..6,
                                     }),
                                     rhs: Box::new(Expr {
@@ -594,7 +594,7 @@ mod tests {
         let expected = &[Stmt {
             kind: StmtKind::Var {
                 iden: Iden {
-                    iden: "a".to_string(),
+                    iden: "a".to_owned(),
                     span: 4..5,
                 },
                 init: Some(Expr {
@@ -631,7 +631,7 @@ mod tests {
                 body: Block {
                     block: vec![Stmt {
                         kind: StmtKind::Print(Expr {
-                            kind: ExprKind::Literal(Value::Str("Buy Able products!".to_string())),
+                            kind: ExprKind::Literal(Value::Str("Buy Able products!".to_owned())),
                             span: 19..39,
                         }),
                         span: 19..46,
@@ -651,17 +651,17 @@ mod tests {
         let expected = &[Stmt {
             kind: StmtKind::Var {
                 iden: Iden {
-                    iden: "script".to_string(),
+                    iden: "script".to_owned(),
                     span: 13..17,
                 },
                 init: Some(Expr {
                     kind: ExprKind::BinOp {
                         lhs: Box::new(Expr {
-                            kind: ExprKind::Literal(Value::Str("script".to_string())),
+                            kind: ExprKind::Literal(Value::Str("script".to_owned())),
                             span: 20..26,
                         }),
                         rhs: Box::new(Expr {
-                            kind: ExprKind::Variable("script".to_string()),
+                            kind: ExprKind::Variable("script".to_owned()),
                             span: 29..33,
                         }),
                         kind: BinOpKind::Add,
@@ -684,7 +684,7 @@ mod tests {
                 kind: ExprKind::Cart(vec![
                     (
                         Expr {
-                            kind: ExprKind::Literal(Value::Str("able".to_string())),
+                            kind: ExprKind::Literal(Value::Str("able".to_owned())),
                             span: 1..7,
                         },
                         Expr {
@@ -694,7 +694,7 @@ mod tests {
                     ),
                     (
                         Expr {
-                            kind: ExprKind::Literal(Value::Str("script".to_string())),
+                            kind: ExprKind::Literal(Value::Str("script".to_owned())),
                             span: 14..22,
                         },
                         Expr {
@@ -731,11 +731,11 @@ mod tests {
                     expr: Box::new(Expr {
                         kind: ExprKind::Cart(vec![(
                             Expr {
-                                kind: ExprKind::Literal(Value::Str("able".to_string())),
+                                kind: ExprKind::Literal(Value::Str("able".to_owned())),
                                 span: 1..7,
                             },
                             Expr {
-                                kind: ExprKind::Literal(Value::Str("ablecorp".to_string())),
+                                kind: ExprKind::Literal(Value::Str("ablecorp".to_owned())),
                                 span: 11..21,
                             },
                         )]),
diff --git a/ablescript/src/variables.rs b/ablescript/src/variables.rs
index 8aeb816..fb663a5 100644
--- a/ablescript/src/variables.rs
+++ b/ablescript/src/variables.rs
@@ -113,7 +113,7 @@ impl Value {
         }
     }
 
-    /// Coerce a Value to a boolean. The conversion cannot fail.
+    /// Coerce a value to a boolean.
     pub fn into_bool(self) -> bool {
         match self {
             Value::Abool(b) => b.into(),
@@ -130,7 +130,7 @@ impl Value {
         }
     }
 
-    /// Coerce a Value to an aboolean
+    /// Coerce a value to an aboolean.
     pub fn into_abool(self) -> Abool {
         match self {
             Value::Nul => Abool::Never,
@@ -170,7 +170,7 @@ impl Value {
         }
     }
 
-    /// Coerce a Value to a functio
+    /// Coerce a value to a functio.
     pub fn into_functio(self) -> Functio {
         match self {
             Value::Nul => Functio::AbleFunctio {
@@ -186,6 +186,7 @@ impl Value {
         }
     }
 
+    /// Coerce a value into a cart.
     pub fn into_cart(self) -> Cart {
         match self {
             Value::Nul => HashMap::new(),