diff --git a/lime/Lib.hx b/lime/Lib.hx
new file mode 100644
index 000000000..e2a9a79d4
--- /dev/null
+++ b/lime/Lib.hx
@@ -0,0 +1,23 @@
+package lime;
+
+
+class Lib {
+	
+	
+	@:noCompletion private static var __sentWarnings = new Map<String, Bool> ();
+	
+	
+	public static function notImplemented (api:String):Void {
+		
+		if (!__sentWarnings.exists (api)) {
+			
+			__sentWarnings.set (api, true);
+			
+			trace ("Warning: " + api + " is not implemented");
+			
+		}
+		
+	}
+	
+	
+}