diff --git a/Rules.md b/Rules.md
index c7934ae6..a7da0d25 100644
--- a/Rules.md
+++ b/Rules.md
@@ -86,7 +86,7 @@ Mem<x>#State        | when the value for Mem\<x\> is changed
 Http#Initialized
 Mqtt#Connected    | when MQTT is connected
 Mqtt#Disconnected | when MQTT is disconnected
-Power1#Boot       | after Tasmota starts
+Power1#Boot       | `Relay1` state before Wi-Fi and MQTT are connected and before Time sync but after `PowerOnState` is executed.<BR>This will be the last state of `Relay1` if `PowerOnState` set to it's default value (`3`)
 Power1#State      | when a power output is changed<br>use `Power1#state=0` and `Power1#state=1` for comparison, not =off or =on<br>Power2 for Relay2, etc.
 Rules#Timer=1     | when countdown `RuleTimer1` expires
 Switch1#Boot      | occurs after Tasmota starts