avl_rest_json_howto.md

@@ -70,6 +70,12 @@ Content-Length: 776
 "06.01.1980_00:04:09":{"LAT":0.0000000,"LON":0.0000000,"IMEI":353816054730215}
 }  
 
+```
+PFAL command to clear the written JSON data from the buffer
+```
+$PFAL,TCP.JSON.Clear
+```
+
 ```
 PFAL command example to send JSON data
 ```