diff --git a/esds/simulator.py b/esds/simulator.py
index 74dcf3b..6048cdc 100644
--- a/esds/simulator.py
+++ b/esds/simulator.py
@@ -397,10 +397,10 @@ class Simulator:
 
             # Process events
             while len(self.events) > 0 and self.events[0,1] == self.time:
-                event=self.events[0]
-                event_type=int(event[0])
-                ts=self.events[0,1]
-                content=self.events[0,2]
+                event=self.events[0]     # Next event (self.events is sorted by timestamp and priorities)
+                event_type=int(event[0]) # Event type
+                ts=event[1]              # Timestamp
+                content=event[2]         # Event content
                 self.events=np.delete(self.events,0,0) # Consume events NOW! not at the end of the loop (event list may change in between)
                 if event_type == 0:
                     src_id,dst_id,interface, data, datasize,duration,datasize_remaining,start_at,perform_delivery,receiver_required=content