diff --git a/flax/UI.py b/flax/UI.py
new file mode 100644
--- /dev/null
+++ b/flax/UI.py
@@ -0,0 +1,13 @@
+# Abstract UI widgets
+
+class UI(Something):
+    pass
+
+class Scale(UI):
+    def __init__(self, start, stop, res=0.001):
+        pass
+
+""" unfinished
+class Button(UI):
+    def __init__(self, etc)
+"""