diff --git a/scanslicer/controller_canvas_actions.py b/scanslicer/controller_canvas_actions.py
new file mode 100644
index 0000000..b3790e3
--- /dev/null
+++ b/scanslicer/controller_canvas_actions.py
@@ -0,0 +1,4 @@
+from .slices import PhotoSlice
+
+
+# ScanSlicerCanvasActionsMixin: class definition for ScanSlicer behavior.