Documented all current functions

doc/files/udp_socketready.txt

@@ -1,4 +1,13 @@
 #title UDP_SocketReady [RCBasic Doc]
 #header function UDP_SocketReady(socket)
 
+Returns 0 for no activity and non zero for activity. You need to call CheckSockets() at some point before this otherwise it will always
+return 0.
 
+#code
+If UDP_SocketReady ( 0 ) > 0 Then
+    'Socket has activity so we can do something here
+End If
+#/code
+
+#ref CheckSockets