Add implicit variable to capture the evaluated feature sequence number

Author: bjuric

docs/17-implicit-values.mdx

@@ -371,6 +371,23 @@ The following values are implicitly available to all feature and meta files at r
   </div>
 </details>
 
+<details id="gwen-feature-eval-sequenceno">
+  <summary class="setting">
+
+  ```properties
+  gwen.feature.eval.sequenceNo
+  ```
+  <p>The sequence number representing the order in which the feature was evaluated (1 for first, 2 for second, ..etc).</p>
+
+  </summary>
+
+  <div class="grid-3">
+    <div><Link to="#gwen-feature-eval-sequenceno">Link</Link></div>
+    <div align="center"></div>
+    <div align="right">Since <Link to="https://github.com/gwen-interpreter/gwen-web/releases/tag/v4.8.0">v4.8.0</Link></div>
+  </div>
+</details>
+
 ## Rule Level
 
 <details id="gwen-rule-name">