diff --git a/Developing-extensions.md b/Developing-extensions.md
index cb53d1c..dbbb95e 100644
--- a/Developing-extensions.md
+++ b/Developing-extensions.md
@@ -8,3 +8,4 @@ Web ui interacts with installed extensions in the following way:
 - extension's javascript files in the `javascript` directory are added to the page
 - extension's `style.css` file is added to the page
 
+For how to develop custom scripts, which usually will do most of extension's work, see [Developing-custom-scripts]