Features.md

@@ -22,6 +22,18 @@ A tile represents a playable media file (.mp3 or .wav). It allows to play, pause
   - intro (duration is customizable)
 - blinks before EOF
 
+## Trigger
+A tile can use multiple triggers. A trigger fires on a given event. It can fire immediately or after a certain wait time.
+
+- Events
+  - Start
+  - Stop
+  - End (EOF)
+- Actions
+  - change state of other tiles (e.g. play)
+  - change state of other remote tiles (from different PlayWall instance)
+  - change volumne of any tile (including fade)
+
 ## Page
 A page contains multiple tiles in a layout with rows and columns.