beryllw commented on code in PR #1770:
URL: https://github.com/apache/fluss/pull/1770#discussion_r2387185685


##########
website/docs/streaming-lakehouse/integrate-data-lakes/iceberg.md:
##########
@@ -249,9 +394,19 @@ CREATE TABLE daily_sales (
 SORTED BY (__offset ASC);
 ```
 
+### 📊 System Columns
+
+All Iceberg tables created by Fluss include three system columns:
+
+| Column        | Type          | Description                                  
 |
+|---------------|---------------|-----------------------------------------------|
+| `__bucket`    | INT           | Fluss bucket identifier for data 
distribution |
+| `__offset`    | BIGINT        | Fluss log offset for ordering and seeking    
 |
+| `__timestamp` | TIMESTAMP_LTZ | Fluss log timestamp for temporal ordering    
 |
+
 ## Read Tables
 
-### Reading with other Engines
+### 🔧 Reading with Other Engines

Review Comment:
   The icon is duplicated with the one for the `Basic Configuration` title.



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