diff --git a/README.md b/README.md
index 38f3c2d4..d5a4bddd 100644
--- a/README.md
+++ b/README.md
@@ -226,6 +226,12 @@ The `detect` may be one of the following values.
 - `exit` is when an object that **was** previously in the fence has exited the area.
 - `cross` is when an object that **was not** previously in the fence has entered **and** exited the area.
 
+These can be used when establishing a geofence, to pre-filter responses. For instance, to limit responses to `enter` detections:
+
+```
+> nearby fleet fence detect enter point 33.462 -112.268 6000
+```
+
 ## Object types
 
 All object types except for XYZ Tiles and QuadKeys can be stored in a collection. XYZ Tiles and QuadKeys are reserved for the SEARCH keyword only.