| Smart undo / redo |
Ctrl+Z / Ctrl+Shift+Z |
| Copy / paste an item or sublayer |
Ctrl+C / Ctrl+V with the mouse over the 3D Viewport sidebar |
| Cancel a drag |
Esc over the sidebar |
| Reorder or reparent |
drag the row |
| New Image sublayer |
drag an image from Blender's File Browser onto the sidebar — a new layer with an Image sublayer, or into the selected image-bus layer; Overpaint attempts a filename hint, so verify the channel ribbon after import |
| New Material layer |
drag a material from the Asset Browser onto the sidebar — image textures land in image mode, a procedural or mixed material in procedural mode, its node graph mapped to the channels through its Principled BSDF (chapter 7.1) |
| Apply a filter or generator |
click it in the OP Filters / OP Generators shelf, or drag a filter_… / generator_… group from the Asset Browser onto the sidebar |
| Brush stencil |
drag an image from the File Browser onto the Properties editor |
| Brush / Erase on-screen buttons |
Start Buttons / Stop Buttons in the viewport's editor menus (Texture Paint); the arrow keys nudge them |
| Mapping gizmo (2D view) |
drag the centre / a corner / an edge / the ring; Shift+corner = uniform scale; Ctrl while rotating = 5-degree snap (step and key in the OP Settings tab) |
| Floating Overpaint window |
Open Float Window in the Material Paint panel; close it like any Blender window |
| Swap a Color / Fill value for an image |
Use Image in the Node Inspector |
| Expand / collapse a node's box |
its header in the Node Inspector's expanded view |
| Reload the UI icons |
Refresh Icons (OP Settings ▸ Utilities) |
| Keep a custom output route |
Save as Preset (OP Settings ▸ Custom Output Setup) |
| Keep an export configuration |
Save in OP Export; the last export is restored automatically |
| Share a setup |
Create Setup Asset |
| Open the four work areas |
Library, Inspector, Brush or Export at the top of OP Painter |