Documentation/Nightly/SlicerApplication/KeyboardShortcuts

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Application Hot-keys (keyboard accelerators)

• Alt-Left + mouse button should always be available as a substitute for the middle mouse button to support two button mice. On Mac, you can also use the command key + mouse click to get middle mouse events.
• Control-Left + mouse button should always be available as a substitute for the right mouse button to support one button mice (on Mac).

Warning: Developers: Please note the following reserved key combinations!

General

Key(s)	Action bound to key(s)
Ctrl+O	Load a new scene (clears existing scene)
Ctrl+A	Import a scene (does not clear existing scene) Brings up Add Data instead
Ctrl+W	Close a scene
Ctrl+H	Set the current module to be the "home" module -- the module that's exposed when Slicer starts up.
Ctrl+Z	Undo the last undoable action
Ctrl+Y	Redo the last lightpinkoable action
Space-key	Toggles the display of Slicer's Edit Box.
Ctrl+P	Display the Python console Displays the QT-real console
Ctrl+L	Create a new fiducial list.
Ctrl+I	Toggle between "Persistent Place" and "Transform View" interaction modes.
Ctrl+M	Create a new Ruler measurement between the last two placed fiducials.

Slice Viewer Hot-keys (keyboard accelerators)

Key(s)	Action bound to key(s)
` (back-tick key)	Navigate to next fiducial in the active Slice Viewer, or in all viewers if they are linked (back-tick is the left single-quote on the key with the tilde (~) character in the upper left side of the keyboard)
Ctrl+` (back-tick key)	Navigate to next fiducial in all Slice Viewers, independent of their linked state
Shift+` (back-tick key)	Navigate to the previous fiducial in the active Slice Viewer, or in all viewers if they are linked
Ctrl+Shift+` (back-tick key)	Navigate to the previous fiducial in all Slice Viewers, independent of their linked state
p-key	Place a new fiducial in the active Slice Viewer(adds to the current fiducial list, or creates a list if there are none)
o-key	Turn on the Slice Plane reformat widget in the active Slice Viewer
v-key	Toggles the slice plane visibility in the main 3D Viewer
r-key	Fits the slice view to the volume extents in the active Slice Viewer, or in all viewers if they are linked (the first non-none volume will be used in order of Background, Foreground and Label layers)
b-key	Decrement slice in the active Slice Viewer (left or down) by one unit of background pixel spacing
f-key	Increment slice in the active Slice Viewer (right or up) by one unit of backgroun dpixel spacing
Backspace-key	When the mouse is hovering over a fiducial in the Slice Viewer (turning it yellow), delete that fiducial
Delete-key	When the mouse is hovering over a fiducial in the Slice Viewer (turning it yellow), delete that fiducial

Sliders and mouse

• Every click is 1 step, and 1 step is 1 slice (if there are multiple volumes (Labelmap/Back/Foreground, then its the smallest spacing of the 3 that is used).
• Middle click directly jumps to the mouse.
• Home/End keys go to the beginning/end.

Global "hot-keys"

Window Behavior

Action	Slicer4 Key	Slicer3 Key	Meaning
Toggle Maximize current window		Control-m	Make the current Slice or 3D View expand to full view space or return to previous size depending on current state
Toggle Control Pane View		F5 (KWW default)	Show or hide the Control Pane depending on state

MRML

Action	Slicer4 Key	Slicer3 Key	Meaning
Open Scene...		Control-O	Bring up file browser to locate .mrml file
Save Scene		Control-S	Save current scene no browser, disabled if no current file. If no current scene, does Save As...
Save Scene As...		None	Bring up file browser to locate .mrml file
Undo		Control-Z	Revert to last undo point
Redo		Control-Y	Revert to last lightpinko point
Other Menu Items		Alt-<letter>	Bring up or invoke menu or menu item corresponding to letter

Slice Manipulation

Action	Slicer4 Key	Meaning	Slicer3 Key	Slicer2 Key
Toggle link		Toggle linking/unlinking all slices.	l	None
Next slice for this slice viewer		Axial: move Superior, Sag: Right, Cor: Anterior	Right Arrow and Up Arrow and f	Right Arrow
Previous slice for this slice viewer		Axial: move Inferior, Sag: Left, Cor: Posterior	Left Arrow and Down Arrow and b	Left Arrow
Linked Motion		Cause all other slice windows to scroll to RAS point at current cursor location	Shift Key	Same
Toggle Slice Visible		Make the current slice window show as a plane in the 3D view (respects linking)	v	None
Toggle Foreground/Background Opacity		Change opacity of foreground overlay (respects linking) (toggles between current foreground opacity and hidden)	t	None
Toggle Label Overlay		Show/Hide Label for this slice (respects linking) (toggles between current label opacity and hidden)	g	None
Cycle Orientations		Cycle through focus in Axial/Sagittal/Coronal/3D window	Tab	None
Cycle All Orientations		Cycle through focus in Axial/Sagittal/Coronal/3D window in opposite direction	Shift-Tab	None
Fit to window		Set the field of view to match the full extent of the foreground and background volumes (respects linking)	r	None

3D Manipulation

Action	Slicer4 Key	Meaning	Slicer3 Key	Slicer2 Key
Wireframe		change render mode to wireframe	w	Same
Shaded		change render mode to shaded	s	Same
Reset View		Set camera to see all objects	r	None
Toggle Rock Mode		Toggle rock mode	TBD	None
Toggle Spin Mode		Toggle spin mode	TBD	None

Navigating Application

Action	Slicer4 Key	Slicer3 Key	Meaning
Application Menu		Space Bar	Brings up a popup menu with all the application operations and their key binding information
Module Navigation		Control-<number>	Jumps to the numbelightpink module (number order is the same as the order of the shortcut icons in the toolbar at the top of the application.
Move through module history	Control-Left / Control-Right	Control-PageUp/PageDown	Short cuts for the two arrow buttons next to the module popup menu to move back and forth in module history
Search for Module	Control-F	Control-F	Starts an incremental search through the module names and descriptions, terminated by Enter to jump to the module. Probably needs a dialog box.

Module-specific hot-keys

Fiducials

Action	Slicer4 Key	Meaning	Slicer3 Key	Slicer2 Key
Add Fiducial		Adds fiducial at current pointer position	p	Control-p
Delete Fiducial		Deletes the fiducial picked from current mouse position (ignored if no fiducial is under mouse) in 2D slice window	backspace or delete key	Control-d
Select Fiducial		Selects/Deselects the fiducial under the mouse	q	Control-q
		To align slices with fiducials	Hold down the Control key while moving the fiducial
		Jump to the slices aligned to the next fiducial in the list	`
		Jump to the slices aligned to the previous fiducial in the list	Control-`
		Create a new Measurements Ruler between the last two selected fiducials	Control-m

Editor

Action	Slicer4 Key	Slicer3 Key	Meaning
Open Editor Tool Box		Space Bar	Opens the Editor Tool Box -- normally this is a pop-up window, but you can turn it into a persistent window by clicking the 'pin open' icon
Open Color Selector		c	Opens an interface for choosing a color
Move to Next Slice		f	Displays the next slicelightgreen
Move to Previous Slice		b	Displays the previous slice
Color toggle to black		d	Use this while painting or drawing to quickly erase the label just specified
Apply outline		a	Applies the current outline in Draw Effect
Delete last point in Draw Effect		x	Deletes the last point in Draw Effect
Fiducial cycle forward		`	Cycles through fiducials in a fiducial list (this is the backtick key, usually between tab and escape).
Fiducial cycle backward		Control-`	Cycles in reverse direction through a fiducial list.

Platform-specific hot-keys

Action	Slicer4 Key	Slicer3 Key	Meaning
Middle-mouse equivalent		shift + left click on the track pad	running either os X or windows in bootcamp on a macbook pro