Updated usage part of readme

README.md

@@ -71,7 +71,7 @@ This adds a new listener for a OSC address pattern, only OSC messages with a exi
 #define OSC_TYPE_COLOR		1024
 #define OSC_TYPE_ALL		UINT_MAX //=0xffffffff
 ```
-Add listener from AHK script:
+Add a listener from the AHK script:
 ```
 ; just for convenience, you also could use the "magic numbers" directly
 global oscTypeInt := 2
@@ -101,6 +101,7 @@ msghandlerTest1(oscType, data, msgID, hwnd)
     }
 }
 ```
+Note that you may add many listeners, for any combination of the same/different OSC addresses, datatypes and system message IDs. Also, in AutoHotkey you may add multiple callback functions for the same system message ID or multiple system message IDs to the same callback function. This creates a big flexibility but to keep it less clutterd, such multiple routing paths should be avoided where possible.
 
 #### Remove listener
 Of course, listeners also can be removed in a similar way: