diff --git a/src/main.cpp b/src/main.cpp
index ab74366..372e299 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -52,6 +52,9 @@ int main(void)
     texture.reflectivity = 0;
     models::TexturedModel model = { raw_model, texture };
 
+    /**
+    * load and add some models (in this case some level sections) to the entities list.
+    * */
     std::vector<entities::Entity> entities;
     int z = 0;
     for (int i = 0; i < 5; ++i)
@@ -82,6 +85,9 @@ int main(void)
         shader.LoadLight(light);
         shader.LoadViewMatrix(camera);
 		
+        /**
+        * renders eacht entitie in the entities list
+        **/
 		for (entities::Entity& entity : entities)
 		{
             render_engine::renderer::Render(entity, shader);
diff --git a/src/models/Model.h b/src/models/Model.h
index 0388654..acdc433 100644
--- a/src/models/Model.h
+++ b/src/models/Model.h
@@ -10,6 +10,8 @@ namespace models
 		This structure represents a Bare bones Model (A mesh without a texture).
 		The vao_id, points to an ID stored by openGL and the
 		vertex_count is how many triangles in the mesh there are.
+
+		model_size is a vec3 that contains the size of the loaded model.
 	*/
 	struct RawModel
 	{
diff --git a/src/renderEngine/Loader.cpp b/src/renderEngine/Loader.cpp
index 8e58e60..4fff7dc 100644
--- a/src/renderEngine/Loader.cpp
+++ b/src/renderEngine/Loader.cpp
@@ -128,6 +128,11 @@ namespace render_engine
 			glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(int) * indices.size(), &indices[0], GL_STATIC_DRAW);
 		}
 
+		/**
+		* @brief gets the width, height and depth of a model
+		* @param positions all the points of a model
+		* @returns vec3<float> the size values of a model (width, height and depth)
+		**/
 		static glm::vec3 GetSizeModel(std::vector<float>& positions)
 		{
 			float minX = 100;