diff --git a/README.md b/README.md
index e3cae21..6e9bf3d 100644
--- a/README.md
+++ b/README.md
@@ -128,13 +128,16 @@ The window shows the video on the left (auto-playing) and the survey panel on th
 |---|---|
 | Draw water mask | Click and drag on the video |
 | Erase mask | Toggle **Eraser** button, then drag |
+| Brush preview | A white circle follows the cursor showing the current brush size |
 | Undo last stroke | **Undo** |
+| Undo 10 strokes | **Undo×10** |
+| Redo | **Redo** — steps forward through undone strokes |
 | Clear entire mask | **Clear** |
 | Adjust brush size | Slider next to the erase controls |
+| Toggle mask overlay | **Hide Mask / Show Mask** — hides or reveals the green overlay without affecting the mask data |
 | Save and continue | **Next** — saves current clip and loads the next one. If the clip already has a saved annotation a dialog asks whether to replace it or keep the existing save. |
 | Go back | **Previous** — saves current clip and returns to the previously viewed clip. Disabled on the first clip. |
 | Skip without saving | **Skip** — discards any unsaved changes and loads the next clip without writing anything to disk. |
-| Restore last save | **Reload Saved** — reverts mask and answers to what was last written |
 
 ## Output