diff --git a/doc/example_images/readme.txt b/doc/example_images/readme.txt
index f9480c06..874ae388 100644
--- a/doc/example_images/readme.txt
+++ b/doc/example_images/readme.txt
@@ -1,2 +1,6 @@
 this folder contains images that illustrate different KLC rules for the KLC wiki page:
-  https://github.com/KiCad/kicad-library/wiki/Kicad-Library-Convention
\ No newline at end of file
+  https://github.com/KiCad/kicad-library/wiki/Kicad-Library-Convention
+  
+
+Greenshot (http://getgreenshot.org/) was used to create the screenshots and 
+annotations. It can also be used to edit them.
\ No newline at end of file