UDK / AHIT Editor Shortcut Keys

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⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀Unreal Engine 3 Editor / Unreal Development Kit / A Hat in Time Modding Tools Editor
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⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀Note: Some keys may or may not work depending on the editor and editor version.

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▶ General Shortcut Keys

Shortcut⠀Key⠀⠀⠀⠀	Description
Ctrl + C	Copy
Ctrl + V	Paste
Ctrl + X	Cut
Ctrl + Y	Redo
Ctrl + Z	Undo
Ctrl + Tab	Cycle through open windows
Ctrl + Left-Click	Select multiple things
Ctrl + Shift + F	Jump straight to the Content Browser’s search field from anywhere in the editor
F11	Fullscreen Editor
F9 + Left-Clicking	Takes a screenshot of the current viewport. This can be used to capture any editor viewport (Matinee, material editor, level viewports, etc). Screenshots appear in (...HatinTime\HatinTimeGame\Screenshots\Win64)

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▶ LEVEL EDITOR

⠀▸ Viewport, Render & Editor Modes

Keys for moving (WASD) may reguire ALT to be held down with them.
For example ALT + A + Left-Click

General Shortcut Keys

Shortcut⠀Key⠀⠀⠀⠀	Description
WASD or Arrow Keys	Move view around the level
PageUp / E	Move view directly Up
PageDown / Q	Move view directly Down
Shift + A	Select everything
F4	View Actor Properties
F5	View Surface Properties
. + Left-Click	Place pathnode at selected location
, + Left-Click	Place coverlink at selected location
~	Toggles widget coordinate frame between World and Local
Shift + L	Toggle show/hide Stats
Shift + H	Toggle show/hide FPS / HAT: Hides all
Ctrl + H	Unhide all
[]	Lower grid size & Raise grid size

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Preview Mesh

\ (Backslash)	Toggle preview mesh visible
SHIFT + \ (Backslash)	Cycle to a different preview mesh

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To change and add more preview meshes go to HatinTimeEditorUserSettings.ini

[EditorPreviewMesh]
PreviewMeshNames=" EditorMeshes.TexPropCube StaticMesh'EngineMeshes.Sphere' StaticMesh'HatinTime_PrimitiveShapes.TexPropCylinder'" 

Note: Only edit the file when the editor is closed.

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⠀▸ All viewport modes (3D, XY, YZ, XZ views)

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Shortcut⠀Key⠀⠀⠀⠀	Description
Left-Click (while hovering over actor)	Select actor
Double-Left mouse click or F4 (when over actor)	Open actor properties menu
Right-Click	Open context menu
Ctrl + W or Shift + D	Duplicate selected object
Mouse-Wheel Scroll in viewport	Move the viewport camera forward and backward
Alt + Middle-Click	Snap the pivot to the clicked location

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⠀▸ Perspective viewport (Non-orthographic 3D view)

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Shortcut⠀Key⠀⠀⠀⠀	Description
Left-Click (while hovering over actor)	Select actor
Right-Click + Drag	Free camera movement
Left-Click & Right-Click + Drag	Slew camera up & down (Z axis) or left & right (along relative X axis)
Left-Click (on BSP brush)	Select brush surface
Ctrl + Shift + Left-Click (on BSP brush)	Select BSP brush
Ctrl + Alt + Left-Click	Select all in view
Alt + Right-Click (when hovering over brush face)	Copy surface texture to "texture clipboard"
Alt + Left-Click (when hovering over brush face)	Paste (apply) texture to surface
Ctrl + Alt + Left-Click (when over brush face)	Paste (apply texture and texture coordinates to surface
Shift + Alt + Left-Click (when over brush face)	Paste (apply) texture to multiple selected brush surfaces
Right-Click hold + Mouse-Wheel Scroll	Changes camera speed while editing; speed shown in status bar at bottom
Ctrl + T + Left-Click	Teleport to Point
NumPad 1 or NumPad 3	Change perspective camera FOV
Left-Click + Right-Click and drag	Move the viewport camera left, right, up and down
Right mouse-Click and drag	Rotate the viewport camera left, right, up and down (pivot style)
Middle-Click and drag	Measures distances using the in-editor ruler
Left mouse-click and drag	Rotate the viewport camera left and right, and move forward and backward (in 2x2 split)

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⠀▸ Orthographic viewport (XY, YZ, XZ views)

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Shortcut⠀Key⠀⠀⠀⠀	Description
Left-Click (on BSP brush edge)	Select BSP brush
Ctrl + Alt + Left-Click drag	Box Select
Ctrl + Alt + Right-Click drag	Box De-Select
Left-Click or Right-Click + Any	Move camera in direction of mouse movement
Middle-Click + Any	Measure distance in game units
Left-Click & Right-Click + Up/Down	Zoom in/out
Ctrl + Middle-Click	Align all cameras at current camera position (in 2x2 split)
Left-Click + Right-Click and drag	Move the viewport camera in and out (similar to Mouse-Wheel Scroll)
Left-Click / Right-Click and drag	Move the viewport camera left, right, up and down

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⠀▸ Viewport options

Shortcut⠀Key⠀⠀⠀⠀	Description
B	Toggle viewport to show/hide Builder Brush
C / HAT: Alt + C	Toggle viewport to show/hide Object Collision
D / Ctrl + R in HAT	Toggles viewport realtime mode on/off
E / HAT: Alt + E	Toggle viewport to show/hide Decals
F	Toggle viewport to show/hide Fog
G	Toggle Game View mode in viewport (Toggles everything that would not be visible when playing in game)
H	Toggle viewport option to show/hide everything except brushes (BSP) and lighting
I(i)	Toggle viewport to show / hide Level Coloration / hide Textures
K	Toggle viewport to show / hide Unreal Kismet References
N	Toggle viewport to show / hide Navigation Nodes
O	Toggle viewport to show / hide Volumes
P	Toggle viewport to show / hide Paths
Q	Toggle viewport to show / hide BSP (Binary Space Partition)
R	Toggle viewport to show / hide Light Radius / Audio Radius
T	Toggle viewport to show / hide Terrain
W	Toggle static and skeletal meshes on/off
Ctrl + R	Toggle Real Time mode in viewport
Alt + F	Use Perspective viewport type
Alt + G	Use Top viewport type
Alt + H	Use Front viewport type
Alt + J	Use Side viewport type
Alt + X	Toggle fullscreen

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⠀▸ Render Modes

Shortcut⠀Key⠀⠀⠀⠀	Description
Alt + 1	Brush Wireframe mode in viewport
Alt + 2	Wireframe mode in viewport
Alt + 3	Unlit mode in viewport
Alt + 4	Lit mode in viewport
Alt + 5	Lighting Only mode in viewport
Alt + 6	Light Complexity mode in viewport
Alt + 7	Shader Complexity mode in viewport
Alt + 8 / NOHAT	Texture Density mode in viewport
Alt + 9 / NOHAT	LightMap Density mode in viewport
Alt + 0 / NOHAT	Lighting Only with Texel Density mode in viewport
Ctrl + R	Toggle Real Time mode in viewport
G	Enable's 'Game View' Mode which displays a more accurate preview of the game's graphics in-game

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⠀▸ Editor Modes

Shortcut⠀Key⠀⠀⠀⠀	Description
Shift + 1	Switch to Camera Mode
Shift + 2	Switch to Geometry Mode
Shift + 3	Switch to Terrain Editing Mode
Shift + 4	Switch to Texture Alignment Mode
Shift + 6	Switch to Mesh Paint Mode
Shift + 7	Switch to Static Mesh Mode

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⠀▸ Camera

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Camera Bookmarks

Shortcut⠀Key⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀	Description
Ctrl + 1, 2, 3, 4, 5, 6, 7, 8, 9, 0	Store a bookmark containing the current viewport camera data in a slot identified by the specific number. (See 1 or 2 or 3, etc., for retrieval.)
1, 2, 3, 4, 5, 6, 7, 8, 9, 0 (regular keys)	Restore the viewport camera to a previously stored bookmark from a slot identified by the specific number. (See Ctrl + 1 or 2 or 3, etc., for saving bookmarks.)

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Camera Movement

Shortcut⠀Key⠀⠀⠀⠀	Description
1 or 3 (numeric keypad)	Zoom camera Out or In (same as Z or C while holding right mouse button down)
2 or 8 (numeric keypad)	Move camera Back or Forward (same as Down or Up Arrow keys; same as S or W while holding right mouse button down)
4 or 6 (numeric keypad)	Move camera Left or Right (same as Left or Right Arrow keys; same as A or D while holding right mouse button down)
7 or 9 (numeric keypad)	Move camera Down or Up (same as Q or E while holding right mouse button down)

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⠀▸ Other / Maya Camera Tools

"Note that you must be holding down 'U' or 'L' on your keyboard in order to activate these functions. 'U' will center the camera functions on the center of your viewport, 'L' will center the camera functions on the selected actor. These controls are available in most areas of the editor, including the main perspective viewport, static mesh editor, anim set viewer, anim tree viewer, Cascade and PhAT."

Shortcut⠀Key⠀⠀⠀⠀	Description
L + Left/Right Click and drag	Navigation through Maya-style mouse interactions (including pivot around the selected object)
U + Left/Right/Middle Click and drag	Alternative navigation through Maya-style mouse interactions
Left-Click + Drag	Orbit around the selected actor or view
Middle-Click + Drag	Pan camera
Right-Click + Down	Zoom camera out
Right-Click+ Up	Zoom camera in

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⠀▸ Object

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General

Shortcut⠀Key⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀	Description
L + Left-click	Create a Light
A + Left-Click in viewport / HAT: Alt + A + Left-Click	Create the selected Actor (from the Actor Classes browser) at the indicated position, one for every Left-click
D + Left-click / HAT: Alt + D + Left-Click	With a material selected in the Content Browser, will place that material in the world as a decal
S + Left-Click in viewport	Create a Static Mesh (selected in the Content Browser) (also see Alt + S + Left-click)
Alt + S + Left-Click in viewport	Create a Static Mesh (selected in the Content Browser) and re-orient to surface (also see S + Left-click)

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When selected

Shortcut⠀Key⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀	Description
Escape	De-selects everything and closes any actor property windows that are open
Delete	Delete current object
Spacebar	Switch the Transform Widget between Translate, Rotate & Scale modes
` (backtick on tilde key)	Toggles the Reference Coordinate System between World and Local modes
Arrow keys / HAT: Alt + Arrow keys	Nudge position of selected actor(s)
M	Makes the level of the selected actors current
End	Drop the selected object (i.e., a “floating” object) to the surface beneath it
Home	“Go To Actor”, which moves and zooms all viewports to the selected object (i.e., center your viewports on a selected object)
Middle-click viewport	Makes that viewport the active one (without changing the selected object, which happens if you were to use left-click instead)
H	Hide
Ctrl + H	Unhide all
Shift + H	Hide all but selected objects
Left-Click (while not hovering over anything)	De-select current object
Shift + Drag actor with movement widget	Move viewport while moving actor
Shift + Home	Align only the active viewport camera to selected actor
Alt + Drag actor with movement widget	Create duplicate of selected actor and move it
Right-Click (on brush vertex)	Change brush origin to selected vertex
Ctrl + End	Move selected actor back to grid lines
Ctrl + G	Select all other actors belonging to the same groups as the currently selected actors
Ctrl + M	Moves selected actors to the current level
Ctrl + K	Find the selected actor in Kismet
Ctrl + Shift + A	Select all actors with the same class as the currently selected actors
Ctrl + B	Synchronize the currently selected actor with the generic browser
Ctrl + Left-Click + Drag	Move selected object
Ctrl + Shift + Left-Click + Drag	Move selected object and viewport camera
Ctrl + Left-Click and drag on actor in orthographic view type	Move an actor in the plane of the viewport
Ctrl + Right-Click + Drag	Free rotate selected object
Alt + Left-click and drag in viewport	Create duplicate of selected object (See “Alt + Shift + Left-click and drag in viewport” for enhanced feature)
Shift + Left-click and drag on actor’s Translate Widget	Move the selected object while moving the viewport camera
Alt + Shift + Left-click and drag in viewport	Create duplicate of selected object, while moving viewport camera with the copy (See “Alt + Left-click and drag in viewport” for basic feature)
Alt + Right-click in viewport, followed by Alt + Left-click	Copy and paste a material from one surface to another (you can also just keep holding the Alt-key down between the clicks)

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⠀▸ Brush, Terrain, Builder Brush

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Builder Brush-specific

Shortcut⠀Key⠀⠀⠀⠀	Description
F2	Select the red Builder Brush. (Especially useful when followed by the Home key to locate the Builder Brush in a busy map.)
Ctrl + Shift + Left-click on brush in viewport of Perspective type	Select the entire brush (that is, not just an edge or part of it, but all of it)
Ctrl + A in Geometry/Camera Mode	Add CSG for the current Builder Brush
Ctrl + S in Geometry/Camera Mode	Subtract CSG (that is, add a subtractive brush) for the current Builder Brush
Ctrl + I(i)	Intersect brush
Ctrl + D	De-Intersect brush
Ctrl + P	Cause the selected brush to become your builder brush
Right-click in viewport on Brush corner	Snaps Brush corner to grid

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When a Brush surface is selected

Shortcut⠀Key⠀⠀⠀⠀	Description
Shift + B	Selects all surfaces belonging to the same brush of the currently selected surface
Shift + S	Select all brush Surfaces in the level
Shift + Q	Select all the surfaces of that brush EXCEPT the one that is currently selected
Shift + J	Selects all surfaces that are adjacent to the currently selected surface
Shift + W	Select all adjacent Wall surfaces
Shift + T	Selects all surfaces with the same material as the currently selected surface
Shift + N	Deselects all selected surfaces
Ctrl + Shift + F	'Fits' texture over the selected surfaces' polygons (without tiling UVs)

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Terrain editing specific keys

Shortcut⠀Key⠀⠀⠀⠀	Description
Shift / Alt + Roll Middle Mouse Button	Adjust the radius of your editing circles dynamically
Ctrl + Left-click (optional drag) in viewport with Terrain Editing Mode and Paint Tool selected	Raise the terrain
Ctrl + Right-click (optional drag) in viewport with Terrain Editing Mode and Paint Tool selected	Lower the terrain

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Geometry Mode

Shortcut⠀Key⠀⠀⠀⠀	Description
Space bar in Geometry Mode with Pen passive-modifier selected	Defines corners of the extrusion brush geometry in orthographic views
Enter in Geometry Mode with Pen passive-modifier selected	In orthographic views, completes the brush geometry loop by defining the la
Space bar in Geometry Mode with Brush Clip passive-modifier selected	Defines a plane for clipping of the brush geometry in orthographic views

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▶ MATINEE EDITOR

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Matinee shortcuts can be edited in the Shortcut Editor

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Matinee

Shortcut⠀Key⠀⠀⠀⠀	Description
L	Play Forward
J	Play Reverse
K	Stop Playback
Spacebar	Toggle Play / Pause
Add or Equals (=)	Zoom In
Subtract (−) or Underscore (_)	Zoom Out
Ctrl + Z	Undo
Ctrl + Y	Redo
Ctrl + C	Copy Groups / Tracks
Ctrl + X	Cut Groups / Tracks
Ctrl + V	Paste Groups / Tracks
Delete	Delete Selection
I(i)	Mark Section IN
O	Mark Section OUT
Right	Increment Interpolation Position
Left	Decrement Interpolation Position
Shift + Right	Move To Next Key
Shift + Left	Move To Previous Key
R	Split Animation Key
S	Toggle Snap To Keys
Up	Select Previous Track
Down	Select Next Track
Enter	Add New Key
Ctrl + W	Duplicate Selected Keys
Ctrl + I(i)	Crop Animation Beginning
Ctrl + O	Crop Animation End
A	Fit View to Sequence
F	Fit to View to Selected
Shift + A	Fit View to Loop
Ctrl + A	Fit View / Loop Sequence
E	Move to End of Track
Mouse-Wheel Scroll	Zoom the timeline in and out
1	Key Interp Mode AUTO
2	Key Interp Mode USER
3	Key Interp Mode BREAK
4	Key Interp Mode LINEAR
5	Key Interp Mode CONSTANT
Ctrl + Left-Click	Drag keyframes around
Ctrl + Alt + Left-Click	Box Select keyframes

Left-Click and drag from an output connector and drop into an input connector

Connect the output to the input connector

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⠀▸ Curve Editor

Shortcut⠀Key⠀⠀⠀⠀	Description
1	Key Interp Mode AUTO
2	Key Interp Mode USER
3	Key Interp Mode BREAK
4	Key Interp Mode LINEAR
5	Key Interp Mode CONSTANT
Shift + A	Fit View Horizontally
Ctrl + A	Fit View Vertically
A	Fit View to All
F	Fit View to Selected

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▶ KISMET EDITOR

⠀▸ Shortcuts

Shortcut⠀Key⠀⠀⠀⠀	Description
A	Centers and scales the view to display the selected object(s) or all objects
C	Add a new comment for selected object(s) in main area
HAT: E + Left-Click	Console Event
D + Left-Click	Creates a new Delay object
E + Left-Click / HAT: Shift + E + Left-Click	Creates a new External Variable
F + Left-Click	Creates a new Float Variable
G + Left-Click	Creates a new Gate miscellaneous action
I(i) + Left-Click	Creates a new Integer Variable
L + Left-Click	Creates a new Log miscellaneous action
M + Left-Click	Creates a new Matinee object
N + Left-Click	Creates a new Named Variable
O + Left-Click	Creates a new Object Variable
P + Left-Click	Creates a new Player Variable
Q + Left-Click	Creates a new Sequence object
R + Left-Click	Creates a new pair of Remote Event and Activate Remote Event nodes
S + Left-Click	Creates a new Play Sound action
T + Left-Click	Creates a new Toggle action
X + Left-Click	Creates a new Integer Counter condition
Shift + G + Left-Click	Creates a new AND Gate
Underscore (_) & Equals (=) OR Numpad - & Numpad +	'Hide Unused Connectors' and 'Show All Connectors' respectively
PageUp / PageDown	Move the currently selected node into the foreground / background respectively

[ + Left-Click - Sequence Activate

] + Left-Click - Finish Sequence

Steam Formatting issues with these two
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Ctrl + W or Shift + D	Duplicate selected object
Ctrl + Left-Click	Select multiple objects (or deselect the object if already selected)
Ctrl + Alt + Left-Click and drag	Box-select objects by drawing a marquee selection-box area around them in main area
Ctrl + Shift + Alt + Left-Click and drag	Box-select additional objects by drawing a marquee selection-box area around them in main area, which adds the new selection to the current selection
Ctrl + Left-Click and drag	Move a selected object
Ctrl (hold) + Left-Click release	Snap node placement to grid
Double-Click on a subsequence	Opens up the subsequence in the main area
Backspace	Open Parent Sequence
Delete	Removes an object
Alt + Left-Click on an input / output connector	Removes any links going to / from that input / output connector
Alt + Left-Click on a link between input and output connectors	Removes the link between the input and output connectors
Ctrl + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9	Create Kismet bookmarks like in viewport

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⠀▸ Custom Hotkeys

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Thank you to Starblaster for sharing this for the guide!

⠀INFO

Config File: ../HatinTime/HatinTimeGame/Config/HatinTimeEditor.ini

Config Header: [UnrealEd.KismetBindings]

It is recommended to make a backup of the entire [UnrealEd.KismetBindings] block, just in-case.
As well as a backup with your custom bindings afterwards in the event an update / crash wipes your config(s). A simple TXT file in the same directory works for convenient access.
For example "HatinTimeEditor_CustomSettings.txt"

Do not touch the CommentPresets=() line. Adding additional ones has no noticeable effect. Likely an unfinished feature.
Do not edit config files while the editor is open / opening. Always fully close the editor first.

Each Bindings=() line in the [UnrealEd.KismetBindings] block represents a single Kismet binding

Bindings=(Key="KEY",bShift=true/false,SeqObjClassName="PACKAGE.CLASS")

If you have multiple bindings for the same node, all of them will be usable in the editor.
But if you have multiple bindings for the same KEY + bShift combination but for different nodes, only the first one will work.

Key bindings should not contain any spaces!

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⠀KEY

KEY can be any non-numerical non-modifier key, including named keys (e.g. End).
Numerical keys are reserved for Kismet bookmarks.

Bindings=(Key="KEY",bShift=true/false,SeqObjClassName="PACKAGE.CLASS")

For symbols, you will need to use their names instead of the symbol itself.

Symbol	Name
⠀⠀[]	LeftBracket / RightBracket
⠀⠀~	Tilde
⠀⠀/	Slash
⠀⠀\	Backslash
⠀⠀=	Equals
⠀⠀,	Comma
⠀⠀.	Period
⠀⠀'	Quote
⠀⠀_	Underscore

Unusable

There are several keys that are hardcoded to certain functions in the Kismet editor that cannot be used or are not recommened to be used in custom bindings.
The following includes SHIFT variants unless stated otherwise

Modifer keys alone (CTRL, ALT, SHIFT)

0-9 (Reserved for Kismet bookmarks)

Not Recommended

E but NOT SHIFT-E	Works, but not practical. Brings up the New Console Event prompt every time
R	Works, but not practical. Brings up the New Remote Event prompt every time
C	Works, but if you have any nodes selected when pressing it, you'll bring up a New Comment prompt
SHIFT D	For duplicating selected object
Underscore (_) & Equals (=)	Works, but are also bound to 'Hide Unused Connectors' and 'Show All Connectors' respectively
PageUp / PageDown	Works, but are also bound to moving the currently selected node into the foreground / background respectively
Delete	Works, but it also deletes currently selected nodes
Backspace	Works, but is also bound to 'Open Parent Sequence'
F11	Toggles fullscreen mode for the main editor window

⠀SHIFT

bShift=true/false determines if SHIFT is required to be held down at the same time as KEY when using a binding.

Bindings=(Key="KEY",bShift=true/false,SeqObjClassName="PACKAGE.CLASS")

You can omit this entirely if SHIFT is not required.
NOTE: bControl and bAlt custom Kismet bindings will NOT work!!! This also includes the default bindings that use them!

⠀PACKAGE

PACKAGE is the compiled script package that CLASS resides in.

Bindings=(Key="KEY",bShift=true/false,SeqObjClassName="PACKAGE.CLASS")

Determing this is very simple; just look at which top-level (../Development/Src/) sub-folder the class source is stored in.
e.g. SeqVar_Object is in (../Development/Src/Engine/), therefore PACKAGE will be Engine.

⠀CLASS

CLASS is the classname of the Kismet node you want associated with the binding.

Bindings=(Key="KEY",bShift=true/false,SeqObjClassName="PACKAGE.CLASS")

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⠀Speaking of Kismet Hotkeys

Using a Kismet hotkey with your mouse over a node's connector will automatically connect the newly created node to it (if applicable).
If this feature is used on a connector that is already hooked up to something else, it'll insert the new node in between the connection.

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▶ PIE [Play In Editor]

Render Modes

Shortcut⠀Key⠀⠀⠀⠀	Description
Escape	Exit / Close window
P	Bring up Pause Menu (may be HAT specific)
R	Swap controls between Player 1 & Player 2 when CO-OP is enabled (HAT Specific)
Tab	Bring up DEV Console (Bottom)
~ (Tilde) / Ö	Bring up DEV Console (Top)
Page Up	Scroll DEV Console up
Page Down	Scroll DEV Console down
F7	Cycle through viewport render modes backwards
F8	Cycle through viewport render modes forwards
F9	Take a screenshot (May be HAT specific) Appears in [...HatinTime\HatinTimeGame\Screenshots\Win64]

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▶ CONTENT BROWSER

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Shortcut⠀Key⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀	Description
Right-Click & drag	Scroll in the Content Browser, kinda like a touch screen
F5	Refresh of Content Browser
Ctrl + F5	Full Refresh of Content Browser
Alt + Left-Click on a material	Assigns the material to all the faces that are currently selected in the perspective viewport (Doesn't apply to static meshes)
Ctrl + S in Packages panel	Save the selected package
Spacebar	Stop and Play SoundCue

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Private Collections

Private collections are useful for storing commonly used assets in your own collections
(Meshes, Materials, Textures, really anything in the Content Browser)


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To make a collection Left-Click the plus in the corner and give the collection a name

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Then simply drag & drop assets into the collection

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To remove an asset from the collection simply Right-Click and select "Remove from Collection"

To delete a collection select it and Left-Click the minus button

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Search Favourites

You can add more asset types to your Favourites by going to All Types and Right-Clicking a selected asset type, then selecting "Add to Favourites"
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▶ MATERIAL EDITOR

All interactions, unless otherwise noted, are specified for the main panel of the Material Editor. Also, the keys specified to create expression nodes must be held down while pressing the mouse button to take effect.⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

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Shortcut⠀Key⠀⠀⠀⠀	Description
1 + Left-Click	Creates a one-dimensional (scalar) Constant expression
2 + Left-Click	Creates a two-dimensional constant-vector expression
3 + Left-Click	Creates a three-dimensional constant-vector expression
4 + Left-Click	Creates a four-dimensional constant-vector expression
A + Left-Click	Creates a math Add expression
B + Left-Click	Creates a Bump Offset utility expression
C + Left-Click	Creates a Component Mask utility expression
D + Left-Click	Creates a math Divide expression
E + Left-Click	Creates a math Power expression
F + Left-Click	Creates a Material Function expression
I(i) + Left-Click	Creates a If utility expression
L + Left-Click	Creates a Lerp utility expression for linear interpolation
M + Left-Click	Creates a math Multiply expression
N + Left-Click	Creates a math Normalize expression
O + Left-Click	Creates a math One Minus expression
P + Left-Click	Creates a coordinates Panner expression
R + Left-Click	Creates a Reflection Vector expression
S + Left-Click	Creates a Scalar Parameter expression
T + Left-Click	Creates a Texture Sample expression
U + Left-Click	Creates a Texture Coordinate expression
V + Left-Click	Creates a Vector Parameter expression
L (HOLD) in the viewport	Moves the Light source (hold the key down while moving the mouse)
Ctrl + Left-Click and drag	Box-select expression-nodes by drawing a marquee selection-box area around them in main area
Ctrl + Alt + Left-Click and drag	Box-select expression-nodes
Ctrl + Shift + Left-Click and drag	Box-select more expression-nodes
Ctrl + Left-Click a connected point	Break link
Shift + Left-Click a connection point	Link & transfer links to other connection points
Ctrl + W	Duplicate selected object

More about material nodes in the documentation
https://docs.unrealengine.com/udk/Three/MaterialsCompendium.html

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▶ SOUNDCUE EDITOR

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Shortcut⠀Key⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀	Description
Alt + Left-Click on a connection line	Removes the link going between the connectors in the main window area
Ctrl + Left-Click and drag	Move selected objects in the main window area
Ctrl + Alt + Left-Click and drag	Box-select objects by drawing a marquee selection-box area around them in main window area

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▶ ANIMSET & STATIC MESH EDITOR

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AnimSet Editor

Shortcut⠀Key⠀⠀⠀⠀	Description
Left-Click + drag	Move the view around mesh
Right-Click + drag	Zoom in & out
Middle-Click + drag	Move viewport
Space	Toggle movement widget between move & rotate
Z / NumPad 1	Adjust FOV wider
C / NumPad 3	Adjust FOV narrower
L (HOLD) in the viewport	Moves the Light source (hold the key down while moving the mouse)

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Static Mesh Editor

Shortcut⠀Key⠀⠀⠀⠀	Description
Left-Click + drag	Move the view around left & right and up & down to zoom in & out
Right-Click + drag	Move the view around mesh
Space	Toggle movement widget between move & rotate
Z / NumPad 1	Adjust FOV wider
C / NumPad 3	Adjust FOV narrower
L (HOLD) in the viewport	Moves the Light source (hold the key down while moving the mouse)

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▶ PHAT [Physics Asset Tool]

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Shortcut⠀Key⠀⠀⠀⠀	Description
A	Toggle Snap on / off
B	Toggle Editing Mode on/off (for example, to edit constraints)
C	Copy Properties
D	Weld to body
E	Select Rotation Mode
H	Cycle the Mesh Rendering Mode
I(i)	Toggle Instance Properties on / off
J	Cycle the Collision Rendering Mode
K	Cycle the Constraint Rendering Mode
R	Select Scaling Mode
S	Toggle Simulation mode on / off
W	Select Translation Mode
Delete	Delete current primitive

Ctrl + Left-Click on object in main window area	Kick / pop the mesh
Ctrl + Right-Click and drag on object in main window area	Grab and interact with the mesh (for example, pick it up or sling it around)

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HAT Editor Specific

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Currently no info :(

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Credits & Sources

Special thanks to Starblaster for the Custom Hotkeys in Kismet info

Thank you to TheGreatAndPowerfulWeegee for reporting missing hotkeys & verifying hotkeys


Unreal Engine 3 / UDK Documentation
- https://docs.unrealengine.com/udk/Three/EditorButtons.html

blog.tiaan󠀡.󠀡com
- http://blog.tiaan.com/link/2010/07/24/unreal-technology-udk-hotkeys-shortcuts
- WaybackMachine Link[web.archive.org]

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Missing or Incorrect Shortcut Keys

If you notice any shortcut keys missing or not behaving as expected from this list feel free to let me know!

Thanks for checking out the guide!

Check out my Workshop mods here!

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TROUBLESHOOTING

Take a look at the Troubleshooting Guide if you're looking for some help.

https://steamcommunity.com/sharedfiles/filedetails/?id=2994485851
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[UnDrew]

Not exactly an editor shortcut, but you can scroll through the dev console with Page Up and Page Down