diff --git a/Displays.md b/Displays.md
index 27543adb..c07e01a6 100644
--- a/Displays.md
+++ b/Displays.md
@@ -33,6 +33,27 @@ Parameter	|	LCD Display	|	OLED Display	|	TFT Display
 4	|	Local sensors	|	MQTT and local sensors	|	MQTT and local sensors
 5	|	MQTT and Time/Date	|	MQTT, local sensors and Time/Date	|	MQTT, local sensors and Time/Date
 
+## defines used
+
+Feature | Description
+| -- | -- |
+USE_DISPLAY | enables display support in general + at least one of the following display defines 
+USE_DISPLAY_LCD | enables LCD display need also USE_I2C
+USE_DISPLAY_SSD1306 | enables OLED SSD106 display need also USE_I2C
+USE_DISPLAY_MATRIX | enables MATRIX display
+USE_DISPLAY_ILI9341 | enables TFT display need also USE_SPI
+USE_DISPLAY_EPAPER_29 | enables EPAPER display need also USE_SPI
+USE_DISPLAY_EPAPER_42 | enables EPAPER display need also USE_SPI
+USE_DISPLAY_SH1106 | enables OLED SH1106 display need also USE_I2C
+USE_DISPLAY_ILI9488 | enables TFT ILI9488 display need also USE_SPI
+USE_DISPLAY_SSD1351 | enables OLED SSD1351 display need also USE_SPI
+USE_DISPLAY_RA8876  | enables TFT RA8876 display need also USE_SPI 
+USE_TOUCH_BUTTONS | enable virtual touch button support with touch displays 
+SHOW_SPLASH | enable init message on display
+USE_AWATCH | enables support analog watch
+USE_GRAPH | enable line charts (default is 4 graphs)
+
+
 # DisplayText Use