diff --git a/README.md b/README.md
index 2fe94b0..93f98ed 100644
--- a/README.md
+++ b/README.md
@@ -225,3 +225,5 @@ TODO:
 ### release 2.0
 - [x] Reboot on 2024-05-05
 
+## :ribbon: Licence
+[GPL 3.0](https://choosealicense.com/licenses/gpl-3.0/)
diff --git a/save_image_extended.py b/save_image_extended.py
index af32d8c..59eeac6 100644
--- a/save_image_extended.py
+++ b/save_image_extended.py
@@ -483,6 +483,7 @@ class SaveImageExtended:
     # 0x010f: Make
     # 0x9286: UserComment
     # both prompt and workflow must be in IFD close together of that can cause problems for the parseIFD function on import
+    # https://exiftool.org/TagNames/EXIF.html
     # exif[0x9286] = "Prompt: " + json.dumps(metadata['prompt'])     # UserComment
     exif[0x010f] = "Prompt: " + json.dumps(metadata['prompt'])     # Make
     exif[0x010e] = "Workflow: " + json.dumps(metadata['workflow']) # ImageDescription