This page lists all default keyboard and mouse shortcuts in Volvicon. Shortcuts are grouped by the area or tool where they apply.
Shortcuts for the 3D View and each Slice View are only active when that view has focus. Click inside the view first to activate it, then use the shortcuts.
Global Shortcuts
These shortcuts work anywhere in the application.
File Operations
| Shortcut | Action |
|---|
Ctrl+Shift+N | New Project |
Ctrl+O | Open Project |
Ctrl+S | Save |
Ctrl+Shift+S | Save As |
Ctrl+P | Print |
Ctrl+Shift+P | Save Screenshot |
Ctrl+Alt+R | Record Video |
Ctrl+W | Close Project |
Alt+F7 | Preferences |
Undo / Redo
| Shortcut | Action |
|---|
Ctrl+Z | Undo |
Ctrl+Y | Redo |
Panels
| Shortcut | Action |
|---|
Ctrl+Alt+M | Show or hide the Messages dock, or bring it forward when another panel covers it |
Ctrl+Alt+L | Show or hide the Operation Log dock, or bring it forward when another panel covers it |
Ribbon Search Bar
| Shortcut | Action |
|---|
Ctrl+F | Feature search |
Escape | Clear search and close suggestions |
Help
| Shortcut | Action |
|---|
F1 | User Guide (opens this documentation) |
Scene Tree
These shortcuts are active when the Scene Tree panel has focus.
Keyboard
| Shortcut | Action |
|---|
Alt+Up | Move selected item up within its group |
Alt+Down | Move selected item down within its group |
Ctrl+A | Select all objects |
Ctrl+E | Toggle visibility of selected objects |
F2 | Rename selected item |
Delete | Delete selected item |
Mouse
| Interaction | Action |
|---|
| Left click | Select item |
| Right click | Open context menu |
| Left click on visibility icon | Toggle object visibility |
| Drag within the same group | Reorder item (single item only) |
Active View Layout Controls
These shortcuts are active only when a 3D or slice view has focus.
| Shortcut | Action |
|---|
Ctrl+Space | Maximize or restore the active view within the current layout |
F11 | Detach the active view |
Ctrl+Alt+Space | Toggle fullscreen for the active view |
Scripting Editor
These shortcuts are active when the scripting editor has focus.
| Shortcut | Action |
|---|
Ctrl+R | Execute the current script |
Ctrl+Shift+R | Stop script execution |
Ctrl+Space | Trigger code completion |
Ctrl+Alt+I | Format indentation for the current selection or the whole script |
Ctrl+/ | Toggle comments for the current line or selection |
Ctrl+Shift+F | Show Find |
Ctrl+Shift+H | Show Find and Replace |
Ctrl+S | Saves the current script to file. Only works when the scripting editor is focused; otherwise it triggers the global save action. |
Find and Replace bar
These are active while the Find or Find and Replace bar of the scripting editor is open.
| Shortcut | Action |
|---|
Enter | Find next occurrence |
Shift+Enter | Find previous occurrence |
F3 | Find next occurrence |
Shift+F3 | Find previous occurrence |
Escape | Close the bar |
AI Assistant
Open the AI Assistant panel with the title-bar button or the shortcut below. The message and text-size shortcuts are active when the panel has focus.
Open
| Shortcut | Action |
|---|
Ctrl+Alt+A | Open or close the AI Assistant panel |
| Shortcut | Action |
|---|
Enter | Send the message |
Ctrl+Enter | Send the message |
Shift+Enter | Insert a new line without sending |
Up | Recall the previous sent message (when the cursor is at the start of the box) |
Down | Recall the next sent message (when the cursor is at the end of the box) |
Text Size (conversation and message box)
The chat text size is shared by both areas, is separate from the application font size (File → Preferences → User Interface), and is remembered between sessions. It can be changed from either the conversation or the message box.
| Shortcut | Action |
|---|
Ctrl++ (or Ctrl+=) | Increase chat text size |
Ctrl+- | Decrease chat text size |
Ctrl+0 | Reset chat text size to the default |
Ctrl + Scroll wheel | Increase / decrease chat text size |
3D View
Click inside the 3D View to give it focus before using these shortcuts. They are not active globally.
Camera History (3D View toolbar)
| Shortcut | Action |
|---|
Ctrl+B | Undo camera position |
Ctrl+G | Redo camera position |
Keyboard Shortcuts (3D View active)
| Shortcut | Action |
|---|
C | Set centre of rotation to the point under the cursor and centre the view |
R | Reset 3D View (View tab → Camera → Reset 3D View) |
V | Toggle between Perspective and Parallel (orthographic) projection |
S | Switch to Solid representation (View tab → 3D View → Solid) |
E | Switch to Solid Edges representation (View tab → 3D View → Solid Edges) |
W | Switch to Wireframe representation (View tab → 3D View → Wireframe) |
Q | Switch to Points representation (View tab → 3D View → Points) |
X | Align camera to +X axis (View tab → Camera → Standard Views) |
Shift+X | Align camera to −X axis |
Y | Align camera to +Y axis |
Shift+Y | Align camera to −Y axis |
Z | Align camera to +Z axis |
Shift+Z | Align camera to −Z axis |
I | Isometric view (View tab → Camera → Standard Views → Isometric View) |
Mouse Interactions (3D View active)
| Interaction | Action |
|---|
| Left button drag | Rotate view |
| Right button drag | Zoom in / out (dolly) |
| Scroll wheel | Zoom in / out |
| Middle button click | Set reslice cursor centre — moves the crosshair to the clicked location in all Slice Views, while the crosshair is enabled |
Shift + middle button drag | Move the slice plane under the cursor through the volume (View tab → 3D View → Slice Planes) |
| Right click (cursor moved less than 3 px) | Open context menu for the object under the cursor |
When a clipping or primitive ROI widget is active, its controls take precedence over 3D view navigation while the pointer is over the widget.
| Interaction | Action |
|---|
| Left-drag a cuboid face or handle | Adjust the cuboid |
| Ctrl + left-drag a cuboid | Translate the cuboid |
| Ctrl + right-drag a cuboid | Resize the cuboid |
| Ctrl + left-drag a sphere | Translate the sphere |
| Ctrl + right-drag a sphere | Resize the sphere |
| Ctrl + left-drag a plane or cylinder part | Adjust the selected plane or cylinder part |
| Ctrl + right-drag a plane or cylinder | Resize the plane or cylinder |
Slice Views (2D Views)
Click inside a Slice View to give it focus before using these shortcuts. Shortcuts marked "all Slice Views" apply to every Slice View when that shortcut is triggered.
Keyboard Shortcuts (Slice View active)
| Shortcut | Action |
|---|
R | Fit and reset the active Slice View camera |
Shift+R | Fit and reset all Slice Views cameras |
The slice slider and slice number box in the top bar of each Slice View take the keyboard once they have focus: Up / Down step one slice, and Page Up / Page Down step in larger increments.
Mouse Interactions (Slice View active)
| Interaction | Action |
|---|
| Left button drag | Adjust window / level (while window/level adjustment is enabled: View tab → Window/Level) |
| Right button drag | Zoom in / out (dolly), centred on the pointer |
| Right button click without dragging | Open the slice view context menu |
| Scroll wheel | Navigate forward / backward through slices |
| Middle button click | Move the crosshair centre (while the crosshair is enabled: View tab → Crosshair) |
| Middle button drag | Pan the view. Available while the crosshair is disabled, because the crosshair takes the middle button |
Alt + mouse move (without Shift or Ctrl) | Move the crosshair centre — synchronises the crosshair position across all Slice Views |
| Mouse hover | Display live voxel information: world coordinates (X, Y, Z), voxel indices (I, J, K), and gray value (GV / HU) |
Segmentation — Edit Mask
These shortcuts are active when the Edit Mask tool is open (Segmentation tab → Edit Mask).
Keyboard Shortcuts
| Shortcut | Action |
|---|
Shift (hold) | Temporarily switch to Erase mode while held |
+ | Increase brush size |
- | Decrease brush size |
Ctrl+Shift+B | Toggle brush shape between Circle and Rectangle |
Mouse (Brush mode active)
| Interaction | Action |
|---|
| Left button hold + drag | Paint / draw stroke |
| Middle button | Pan view while painting |
These shortcuts apply when a selection-based ROI tool is active (for example, Rectangle, Polygon, Lasso, or Circle in Edit Mask or other segmentation tools).
In the segmentation tools, holding Shift switches between the Draw and Erase operations for every ROI tool.
Rectangle Selection
| Interaction | Action |
|---|
| Left button drag | Draw rectangle selection region |
| Left button release | Confirm selection |
Shift (hold) | Switch between Draw and Erase |
Alt + left button | Camera navigation (overrides selection) |
Lasso (Freehand) Selection
| Interaction | Action |
|---|
| Left button drag | Draw freehand outline |
| Left button release | Confirm selection |
Shift (hold) | Switch between Draw and Erase |
Alt + left button | Camera navigation (overrides lasso) |
Circle Selection
| Interaction | Action |
|---|
| Left button drag | Draw a circle around the target area |
| Left button release | Confirm selection |
Shift (hold) | Switch between Draw and Erase |
Alt + left button | Camera navigation (overrides circle) |
Polygon (Polylines) Selection
| Interaction | Action |
|---|
| Left button click | Add a vertex |
| Middle button release | Close and confirm the polygon |
Alt + left button | Camera navigation in the 3D view |
LiveWire Selection
| Interaction | Action |
|---|
| Left button click | Add a vertex |
| Hold left button and drag | Continue drawing LiveWire path |
| Right button release | Close and confirm the LiveWire selection |
Alt + left button | Camera navigation in the 3D view |
These shortcuts are active when surface selection tools are in use (Surface tab editing tools that use ROI selection, such as Cut or Editor).
| Shortcut | Action |
|---|
Shift (hold) | Switch to Subtract from selection mode |
Escape | Clear current selection |
Delete | Remove selected triangles |
I | Toggle visibility of selected triangles |
+ | Increase brush size |
- | Decrease brush size |
These shortcuts are active when the Masking tool is open (Image tab → Masking).
| Shortcut | Action |
|---|
Shift (hold) | Temporarily switch to Unmasking mode |
Escape | Clear the current mask |
These mouse interactions apply when a 3D interactive drawing tool is active in the 3D View (for example, when placing primitives, drawing measurement shapes, or using surface creation tools).
In all 3D drawing tools, holding Alt while pressing the left mouse button temporarily suspends the tool and performs standard camera rotation instead.
Line / Arrow / Cone / Cylinder (click mode)
| Interaction | Action |
|---|
| Left button click (1st) | Set first endpoint |
| Left button click (2nd) | Set second endpoint and confirm |
Line / Arrow / Cone / Cylinder (drag mode)
| Interaction | Action |
|---|
| Left button hold + drag | Define endpoints by dragging |
| Left button release | Confirm shape |
Sphere Placement
| Interaction | Action |
|---|
| Left button click | Place sphere centre |
| Left button drag downward | Increase radius |
| Left button drag upward | Decrease radius |
| Left button release | Confirm sphere |
3D Model / PolyData Placement
| Interaction | Action |
|---|
| Left button click | Pick placement point on the scene |
| Left button drag | Rotate the placed object |
| Left button release | Confirm placement |
Point Movement
| Interaction | Action |
|---|
| Left button click | Select point to move |
| Left button drag | Move point in 3D space |
| Left button release | Confirm new position |
3D Brush / Cell Selection
| Interaction | Action |
|---|
| Left button click / drag | Select surface cells (triangles) under the brush |
| Left button release | Confirm selection |
These interactions apply when a measurement markup is being placed (Measure tab).
Distance Measurement
| Interaction | Action |
|---|
| Left button click (1st) | Place first endpoint |
| Left button click (2nd) | Place second endpoint; distance is shown |
| Drag endpoint handle | Reposition endpoint; distance updates in real time |
Angle Measurement
| Interaction | Action |
|---|
| Left button click (1st) | Place first point |
| Left button click (2nd) | Place vertex (middle point) |
| Left button click (3rd) | Place third point; angle is shown |
| Drag any handle | Reposition point; angle updates in real time |
Point Picking
Several tools take a point from the scene instead of typed coordinates. In each of them, hover over the point you want and press P.
| Shortcut | Action |
|---|
P | Pick the point under the cursor and use it as that tool's reference point |
The tools that accept it:
| Tool | What the picked point becomes |
|---|
| Camera Settings (View tab) | The centre of rotation |
| ROI-based tools that place a sphere, cuboid, cylinder, or plane | The centre of the ROI |
| Create (Surface tab) | The placement point of the new primitive |
| Transform (Surface tab) | The centre of rotation for the transform |
| Engrave Text (Surface tab) | The point the text is placed on |
| Region Grow and Dynamic Region Grow (Segmentation tab) | The seed point |
Snapshots
These shortcuts are active when the Snapshots panel has focus in the Export PDF Report dialog (Measure tab → Statistics Tools → Export... (PDF Report) → Snapshots tab).
| Shortcut | Action |
|---|
F2 | Edit the description of the selected snapshot |
Delete | Delete the selected snapshot |
Messages Dock
This shortcut is active when the message list of the Messages dock has focus.
| Shortcut | Action |
|---|
Ctrl+C | Copy the selected messages with their time and level |
Message Box
| Shortcut | Action |
|---|
Ctrl+C | Copy the message text to the clipboard |