diff --git a/src/main/fr/celticinfo/lox/Expr.kt b/src/main/fr/celticinfo/lox/Expr.kt
index 6a245b8..4a2b22d 100644
--- a/src/main/fr/celticinfo/lox/Expr.kt
+++ b/src/main/fr/celticinfo/lox/Expr.kt
@@ -1,5 +1,8 @@
 package fr.celticinfo.lox
 
+/**
+ * The Expr class represents the different types of expressions that can be parsed by the Parser.
+ */
 sealed class Expr {
 }