diff --git a/100.md b/100.md
index 2a8222b..306fe6f 100644
--- a/100.md
+++ b/100.md
@@ -21,6 +21,15 @@ Below is an example filter that matches events with a `g` tag in their structure
 }
 ```
 
+Other filter example that matches events with an empty/non present `e` tag in their structure:
+
+
+```json
+{
+  "tags": ["!e"]
+}
+```
+
 Suggested Use Cases
 -------------------
 One of the suggested use cases for this NIP is for location-specific events. Clients can utilize the provided filter example to locate events with specific location-related tags, regardless of how the location information has been stored in the events.
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