diff --git a/src/main.rs b/src/main.rs
index c3ee6e2..7a4c95c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,13 +1,15 @@
-// src/main.rs
 mod ast;
 mod dsl;
 
 use std::sync::Arc;
 
 use ast::{
-    ExprAst, ExprAst::Atom, ExprAst::Composition as C, ExprAst::Junction as J, Prim::AddPair,
-    Prim::Cos, Prim::Input, Prim::Sin, Prim::Triple, ast_input, hash_ast,
+    ExprAst,
+    ExprAst::{Atom, Composition as C, Junction as J},
+    Prim::{AddPair, Cos, Input, Sin, Triple},
+    ast_input, hash_ast,
 };
+
 use dsl::{Composition, Expr, Function, Junction};
 
 // ========= тестовые функции =========
@@ -22,46 +24,25 @@ fn triple(x: f64) -> f64 {
     3.0 * x
 }
 
-// (a,b) -> a + b
+/// (a,b) -> a + b
 fn add_pair(p: (f64, f64)) -> f64 {
     p.0 + p.1
 }
 
-// ========= демонстрация =========
-
 // AST для sin(cos(x) + 3*x)
 fn pupa() -> ExprAst {
-    // cos(x)
     let cos_x = C(Box::new(ast_input()), Box::new(Atom(Cos)));
-
-    // 3 * x
     let triple_x = C(Box::new(ast_input()), Box::new(Atom(Triple)));
-
-    // (cos(x), 3*x)
     let j = J(Box::new(cos_x), Box::new(triple_x));
-
-    // AddPair ∘ Junction  => cos(x) + 3*x
     let add = C(Box::new(j), Box::new(Atom(AddPair)));
-
-    // Sin ∘ (AddPair ∘ Junction)
     C(Box::new(add), Box::new(Atom(Sin)))
 }
 
 fn lupa() -> ExprAst {
-    use ast::*;
-    // cos(x)
     let cos_x = C(Box::new(ast::ast_input()), Box::new(Atom(Cos)));
-
-    // 3 * x
     let triple_x = C(Box::new(ast_input()), Box::new(Atom(Triple)));
-
-    // (cos(x), 3*x)
     let j = J(Box::new(triple_x), Box::new(cos_x));
-
-    // AddPair ∘ Junction  => cos(x) + 3*x
     let add = C(Box::new(j), Box::new(Atom(AddPair)));
-
-    // Sin ∘ (AddPair ∘ Junction)
     C(Box::new(add), Box::new(Atom(Sin)))
 }