Update Serial.adoc

Language/Functions/Communication/Serial.adoc

@@ -36,17 +36,16 @@ Used for communication between the Arduino board and a computer or other devices
 
 [options="header"]
 
-The Nano ESP32 board 
+The Nano ESP32 board is an exception due to being based on the ESP32 core. Here, `Serial0` refers to `RX0` and `TX0`, while `Serial1` and `Serial2` are additional ports that can be assigned to any free GPIO.
 
 |================================================================================================================================================
-| Board                     | Serial0 pins                   | Serial1 pins     | Serial2 pins        | Serial3 pins     | Serial4 pins
-| Nano ESP32                |                                | 0(RX0), 1(TX0)   | Any free GPIO [1]  |                   |
+| Board                     | Serial0 pins                   | Serial1 pins        | Serial2 pins        | Serial3 pins     | Serial4 pins
+| Nano ESP32                | 0(RX0), 1(TX0)                 | Any free GPIO       | Any free GPIO       |                  |
 |================================================================================================================================================
 
+You can read more about configuring the Nano ESP32's additional serial ports in https://docs.arduino.cc/tutorials/nano-esp32/cheat-sheet/#uart[this article].
 
-* [1] The Nano ESP32 has a second hardware serial port available, but you need to specify the pins. 
-
-
+[%hardbreaks]
 On older boards (Uno, Nano, Mini, and Mega), pins 0 and 1 are used for communication with the computer. Connecting anything to these pins can interfere with that communication, including causing failed uploads to the board.
 [%hardbreaks]
 You can use the Arduino environment's built-in serial monitor to communicate with an Arduino board. Click the serial monitor button in the toolbar and select the same baud rate used in the call to `begin()`.