diff --git a/platformio.ini b/platformio.ini
index 5ab191eb..49a79534 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -456,11 +456,12 @@ build_unflags = ${common.build_unflags}
 build_flags = ${common.build_flags_esp32}
   -D WLED_RELEASE_NAME=ESP32 #-D WLED_DISABLE_BLYNK #-D WLED_DISABLE_BROWNOUT_DET
   -D ABL_MILLIAMPS_DEFAULT=1500 ; 850 not enough for 1024 leds
-  -D UWLED_USE_MY_CONFIG
+  -D WLED_USE_MY_CONFIG
   -D USERMOD_AUDIOREACTIVE
   -D UM_AUDIOREACTIVE_USE_NEW_FFT
   -D USERMOD_CUSTOMEFFECTS
   ; -D WLED_DEBUG
+  ; -D SR_DEBUG
 lib_deps = ${esp32.lib_deps}
   https://github.com/kosme/arduinoFFT#develop @ 1.9.2
 ; monitor_filters = esp32_exception_decoder
@@ -475,13 +476,14 @@ upload_speed = 460800 ; or 921600
 platform_packages = ${esp32.platform_packages}
 build_unflags = ${common.build_unflags}
 build_flags = ${common.build_flags_esp32}
-  -D WLED_RELEASE_NAME=ESP32 ; what does this do?
-  #-D WLED_DISABLE_BLYNK #-D WLED_DISABLE_BROWNOUT_DET ; which settings and when?
+  -D WLED_RELEASE_NAME=ESP32 ; This will be included in the firmware.bin filename
+  -D WLED_DISABLE_BLYNK ; BLYNK is only provided for backwards compatibility (no new users accepted)
+  ;-D WLED_DISABLE_BROWNOUT_DET ; enable if you get "brownout detected" errors at startup 
   -D ABL_MILLIAMPS_DEFAULT=1500 ; 850 not enough for 1024 leds
   -D WLED_MAX_USERMODS=8 ; default only 4-6
-  -D UWLED_USE_MY_CONFIG ; what does this do?
+  -D WLED_USE_MY_CONFIG ; include custom my_config.h
   -D USERMOD_AUDIOREACTIVE
-  -D UM_AUDIOREACTIVE_USE_NEW_FFT ; explain
+  -D UM_AUDIOREACTIVE_USE_NEW_FFT ; use latest (upstream) FFTLib, instead of older library midified by blazoncek. Slightly faster, more accurate, needs 2KB RAM extra   
   -D USERMOD_DALLASTEMPERATURE
   -D USE_ALT_DISPlAY ; new versions of USERMOD_FOUR_LINE_DISPLAY and USERMOD_ROTARY_ENCODER_UI
   -D USERMOD_FOUR_LINE_DISPLAY
@@ -490,7 +492,8 @@ build_flags = ${common.build_flags_esp32}
   -D USERMOD_CUSTOMEFFECTS ; WLEDSR usermod
   -D USERMOD_WEATHER ; WLEDSR usermod
   -D USERMOD_GAMES ; WLEDSR usermod
-  ; -D WLED_DEBUG
+  ; -D WLED_DEBUG ; lots of generic debug messages
+  ; -D SR_DEBUG ; some extra debug messages from audioreactive
 lib_deps = ${esp32.lib_deps}
   OneWire@~2.3.5 ; used for USERMOD_FOUR_LINE_DISPLAY and USERMOD_GAMES?
   olikraus/U8g2 @ ^2.28.8 ; used for USERMOD_FOUR_LINE_DISPLAY 
@@ -499,8 +502,8 @@ lib_deps = ${esp32.lib_deps}
 board_build.partitions = ${esp32.default_partitions}
 ; board_build.partitions = tools/WLED_ESP32_16MB.csv
 ; board_build.partitions = tools/WLED_ESP32-wrover_4MB.csv
-board_build.f_flash = 80000000L ; explain
-board_build.flash_mode = dio ; explain (dio vs qio?)
+board_build.f_flash = 80000000L ; use full 80MHz speed for flash (default = 40Mhz) 
+board_build.flash_mode = dio ; (dio = dual i/o; more compatible than qio = quad i/o)
 
 [env:esp8266mdev]
 extends = env:d1_mini