diff --git a/Dynamic-filtering.md b/Dynamic-filtering.md
index 555b030..c128e01 100644
--- a/Dynamic-filtering.md
+++ b/Dynamic-filtering.md
@@ -6,6 +6,10 @@ Of course, blocking portion of a page may cause page breakage, sometimes benign,
 
 ![Figure 1](https://raw.githubusercontent.com/gorhill/uBlock/master/doc/img/dynamic-filtering-1.png)
 
+The "default" row above refers to the default settings to use for any web site. These default settings will take effect on the site **unless** there are specific settings for the current site, which specific settings appear in the row above.
+
+Columns:
+
 1. to block inline `<script>` tags, i.e. javascript code which is embedded directly in the main document.
 2. to block 1st-party `<script>` tags.
 3. to block 3rd-party `<script>` tags.