diff --git a/draw/Iinstruction.py b/draw/Iinstruction.py
index fa7b94f..38c9070 100644
--- a/draw/Iinstruction.py
+++ b/draw/Iinstruction.py
@@ -1,3 +1,10 @@
+#!/usr/bin/env python
+
+"""Iinstruction.py: #TODO"""
+
+__author__      = "Weckyy702"
+
+
 from typing import Iterable, List
 from abc import ABCMeta, abstractmethod
 from draw import code_to_image as cti
diff --git a/draw/code_to_image.py b/draw/code_to_image.py
index ce72948..18e737a 100644
--- a/draw/code_to_image.py
+++ b/draw/code_to_image.py
@@ -1,3 +1,9 @@
+#!/usr/bin/env python
+
+"""code_to_image.py: #TODO"""
+
+__author__      = "plexx, Weckyy702"
+
 from typing import Iterable
 from PIL import Image, ImageDraw, ImageFont
 import os
diff --git a/draw/code_to_image_wrapper.py b/draw/code_to_image_wrapper.py
index b65896f..9f568a3 100644
--- a/draw/code_to_image_wrapper.py
+++ b/draw/code_to_image_wrapper.py
@@ -1,3 +1,10 @@
+#!/usr/bin/env python
+
+"""code_to_image_wrapper.py: #TODO"""
+
+__author__      = "Weckyy702"
+
+
 import draw.code_to_image as cti
 
 class NSD_writer(object):
diff --git a/gui/gui.py b/gui/gui.py
index 7fde7f5..6ca260d 100644
--- a/gui/gui.py
+++ b/gui/gui.py
@@ -1,3 +1,10 @@
+#!/usr/bin/env python
+
+"""gui.py: handle and init Gui."""
+
+__author__      = "oleting"
+
+
 from gui.utils import nassi, output
 from gui.new_window_layouts import Layout_std, Layout_settings
 from errors.custom import JavaSyntaxError, ScopeNotFoundException, InterpreterException, NoPathError
@@ -155,12 +162,6 @@ class Gui:
                 sg.popup(
                     'This was made by plexx(Image generation), Weckyy702(Interpreter) and oleting(Frontend). Used Python 3.9.1, Libraries PySimpleGUI and Pillow.', title='Credits')
 
-            # handle fun feature
-            if event == '-DONATE-':
-                logging.debug(('event = ' + str(event)))
-                sg.popup_notify(
-                    ('You donated $' + str(random.randint(500, 100000000)) + '.'), title='Thanks')
-
 
             # needed Input
 
diff --git a/gui/new_window_layouts.py b/gui/new_window_layouts.py
index 32fa7d5..a6acd4f 100644
--- a/gui/new_window_layouts.py
+++ b/gui/new_window_layouts.py
@@ -1,3 +1,10 @@
+#!/usr/bin/env python
+
+"""new_window_layouts.py: create layouts"""
+
+__author__      = "oleting"
+
+
 import PySimpleGUI as sg
 
 class Layout_std:
@@ -8,8 +15,6 @@ class Layout_std:
                 sg.Button(button_text='Create Image', key='-CREATE-'),
                 sg.Button(button_text='Credits', key='-CREDITS-'),
                 sg.Button(button_text='Settings', key='-SETTINGS-'),
-                # * fun feature
-                sg.Button(button_text='Donate', key='-DONATE-'),
             ]
         ]
 
diff --git a/gui/utils.py b/gui/utils.py
index 4db3e28..7678e0b 100644
--- a/gui/utils.py
+++ b/gui/utils.py
@@ -1,3 +1,10 @@
+#!/usr/bin/env python
+
+"""utils.py: utils for gui.py"""
+
+__author__      = "oleting, Weckyy702"
+
+
 from errors.custom import NoPathError
 from interpreter.NassiShneidermann import NassiShneidermanDiagram, Overwrite_behaviour, OB
 
@@ -27,9 +34,7 @@ def nassi(input_path: str, output_path: str, outputname: str, types, remove_tags
 
     cancel = NSD.convert_to_image(output_directory, on_conflict=behaviour)
     
-    if not cancel:
-        return None
-
+    
     return output_directory, is_empty
 
 
diff --git a/interpreter/NassiShneidermann.py b/interpreter/NassiShneidermann.py
index 33cc220..590a4ba 100644
--- a/interpreter/NassiShneidermann.py
+++ b/interpreter/NassiShneidermann.py
@@ -1,3 +1,11 @@
+#!/usr/bin/env python
+
+"""NassiShneidermann.py: #TODO"""
+
+__author__      = "Weckyy702"
+
+
+
 from typing import Dict, List, Optional
 from PySimpleGUI import one_line_progress_meter
 import logging
diff --git a/interpreter/function_scope.py b/interpreter/function_scope.py
index d1d5d81..ca65cd2 100644
--- a/interpreter/function_scope.py
+++ b/interpreter/function_scope.py
@@ -1,3 +1,9 @@
+#!/usr/bin/env python
+
+"""function_scope.py: #TODO"""
+
+__author__      = "Weckyy702"
+
 from typing import Iterable, List
 from draw.Iinstruction import Iinstruction
 
diff --git a/interpreter/interpret_source.py b/interpreter/interpret_source.py
index 235fba3..d410388 100644
--- a/interpreter/interpret_source.py
+++ b/interpreter/interpret_source.py
@@ -1,3 +1,11 @@
+#!/usr/bin/env python
+
+"""interpret_source.py: #TODO"""
+
+__author__      = "Weckyy702"
+
+
+
 import logging
 import re
 from typing import Dict, List, Match, Tuple, Union, Iterable
diff --git a/run.py b/run.py
index 0ee8812..596a09c 100755
--- a/run.py
+++ b/run.py
@@ -1,4 +1,9 @@
 #!/usr/bin/env python
+
+"""run.py: entrypoint"""
+
+__author__      = "oleting, Weckyy702"
+
 from gui.gui import Gui as gui
 from sys import argv