diff --git a/hscript/IHScriptAbstractBehaviour.hx b/hscript/IHScriptAbstractBehaviour.hx
new file mode 100644
index 0000000..c091e7f
--- /dev/null
+++ b/hscript/IHScriptAbstractBehaviour.hx
@@ -0,0 +1,12 @@
+package hscript;
+
+// Soon...
+interface IHScriptAbstractBehaviour {
+    public var hasOp:Bool;
+    public var hasArr:Bool;
+    // @:op(A * B), @:op(A++), etc...
+    public function hop(kind:String, a:Dynamic, ?b:Dynamic):Dynamic;
+
+    public function harrayget(key:Dynamic):Dynamic;
+    public function harrayset(key:Dynamic, val:Dynamic):Dynamic;
+}
\ No newline at end of file