diff --git a/Syntax.md b/Syntax.md
index 94951ad..a8cbe8c 100644
--- a/Syntax.md
+++ b/Syntax.md
@@ -1 +1,17 @@
-GFWList syntax originated from [ABP filters](https://adblockplus.org/filters).
\ No newline at end of file
+GFWList syntax originated from [ABP filters](https://adblockplus.org/filters).
+
+* `|`: Stands for matching from beginning (In [URI](http://www.iana.org/assignments/uri-schemes/uri-schemes.xhtml), it's **scheme**): e.g.`http://example.com` will match:
+
+`http://example.com`  
+`http://example.com/page`  
+`http://example.com.co`
+
+It will **NOT** match:
+
+`http://ns.example.com`  
+`https://example.com/page`  
+`https://example.com`  
+`https://ns.example.com`  
+`https://example.com.co`  
+
+***