diff --git a/README.md b/README.md
index 7e690e2..1e93fcc 100644
--- a/README.md
+++ b/README.md
@@ -65,6 +65,8 @@ A first tinylog entry
 
 ### Optional information
 
+#### Optional Header information
+
 Additional informations could be added at the top of your tinylog file:
 ```
 # <Tinylog Title>
@@ -100,6 +102,23 @@ avatar: 🦪 (:oyster:, U+1F9AA)
 
 Other additional metadata could be added but shouldn't be expected.
 
+#### Optional response information
+
+It's common in the gemini world to respond to a particular entry of an author. In that case, author should add a line below the header line with formatted `RE: @author[@capsule.tld] <Date of the original article>`
+
+eg:
+```
+## 2021-06-20 22:30 CEST
+Re: @user 2021-06-20 22:30 CEST
+A response to @user: hello, cool post!
+
+## 2021-06-20 22:30 CEST
+Re: @user@capsule.tld 2021-06-20 22:30 CEST
+A response to @user: hello, cool post!
+```
+
+It will be up to client to decide to use this information or not.
+
 # Additional information
 
 * [Tools around the tinylog format](Tools.md)