Made HOWTO a tiny bit better.

Documentation/HOWTO-change-firmware-and-compile-it_MeesElectronics.md

@@ -123,21 +123,28 @@ If we want to add support for a new board we have to add a new section for this
 
 ## Define new board for real
 
-Let's say we want to add support for the Waveshare ESP32-S3 Pico with an SX1278 LoRa transceiver. First we have to make define both BOARD_MODEL and BOARD_VARIANT. Let's define BOARD_MODEL as 0x61 and BOARD_VARIANT as 0x31 as these numbers are not used yet. Here the 0x31 indicates the use of a SX1278 LoRa transceiver. In the future we can define more transceivers for this board. Then we make entries in the Makefile.
+Let's say we want to add support for the Waveshare ESP32-S3 Pico with an SX1278 LoRa transceiver. First we have to define a BOARD_MODEL. This is a 8 bit value that is used in the source code to select the right code for the hardware. Let's choose  0x61 as the BOARD_MODEL as this number is not used yet.
 
-    # Added board from Mees Electronics
-    firmware-waveshare-esp32-s3-pico: check_bt_buffers
+Now we add the following three entries in the Makefile. The exact place is not critical. But it is good practice to place them
+
+```
+# Added board from Mees Electronics
+firmware-waveshare-esp32-s3-pico: check_bt_buffers
 	    arduino-cli compile --fqbn "esp32:esp32:esp32s3:CDCOnBoot=cdc" $(COMMON_BUILD_FLAGS) --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x61\""
+```
 
-    # Added board from Mees Electronics
-    upload-waveshare-esp32-s3-pico:
+```
+# Added board from Mees Electronics
+upload-waveshare-esp32-s3-pico:
     arduino-cli upload -p $(or $(port), /dev/ttyACM0) --fqbn esp32:esp32:esp32s3
     @sleep 1
     rnodeconf $(or $(port), /dev/ttyACM0) --firmware-hash $$(./partition_hashes ./build/esp32.esp32.esp32s3/RNode_Firmware_CE.ino.bin)
     @sleep 3
     python3 ./Release/esptool/esptool.py --port $(or $(port), /dev/ttyACM0) --chip esp32-s3 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size 4MB 0x210000 ./Release/console_image.bin
+```
 
-    release-waveshare-esp32-s3-pico:
+```
+release-waveshare-esp32-s3-pico:
     arduino-cli compile --fqbn "esp32:esp32:esp32s3:CDCOnBoot=cdc" $(COMMON_BUILD_FLAGS) --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x61\" \"-DBOARD_VARIANT=0x31\""
     cp ~/.arduino15/packages/esp32/hardware/esp32/$(ARDUINO_ESP_CORE_VER)/tools/partitions/boot_app0.bin build/rnode_firmware_waveshare-esp32-s3-pico.boot_app0
     cp build/esp32.esp32.waveshare-esp32-s3-pico/RNode_Firmware_CE.ino.bin build/rnode_firmware_waveshare-esp32-s3-pico.bin
@@ -145,6 +152,7 @@ Let's say we want to add support for the Waveshare ESP32-S3 Pico with an SX1278
     cp build/esp32.esp32.waveshare-esp32-s3-pico/RNode_Firmware_CE.ino.partitions.bin build/rnode_firmware_waveshare-esp32-s3-pico.partitions
     zip --junk-paths ./Release/rnode_firmware_waveshare-esp32-s3-pico.zip ./Release/esptool/esptool.py ./Release/console_image.bin build/rnode_firmware_t3s3_sx126xrnode_firmware_waveshare-esp32-s3-pico.boot_app0 build/rnode_firmware_waveshare-esp32-s3-pico.bin build/rnode_firmware_waveshare-esp32-s3-pico.bootloader build/rnode_firmware_waveshare-esp32-s3-pico.partitions
     rm -r build
+```
 
 In the file Boards.h make an entry for the new board inside the '#if MCU_VARIANT == MCU_ESP32':