Quick Keys

Key	Description
`Mouse Left`	Draw
`Ctrl + Mouse Left`	Draw Shape
`Mouse Right`	Force
`Mouse Scroll`	Zoom
`Mouse Scroll` when pasting image	Scale Image
`Mouse Scroll` over key buttons	Scroll Key Buttons
`Shift + Mouse Scroll`	Adjust draw radius
`Ctrl + Shift + Mouse Scroll`	Adjust shape thickness
`Mouse Middle`	Pan Camera
`Up, Down, Right, Left`	Can be used with specific sand (Reaction Rules)
`Num Keys 0-9`	Select Draw Sand, Select alternate by holding `LShift`
`B`	Switch Color Mode
`E`	Select `Empty`
`F`	Toggle Gravity
`G`	Save GIF
`I`	Save Image
`L`	Explode at mouse (when not paused)
`M`	Switch Draw Mode
`P`	Pause
`Q`	Query Sand
`R`	Center Camera
`U`	Toggle UI
`Z`	Reset Zoom
`Space`	Step simulation once when paused
`Esc`	Settings (Or exit editor)
`Ctrl + T`	Switch between draw shapes
`Shfit + T`	Toggle between Rect and Circular Shape
`Ctrl + X`	Clear Sand
`Ctrl + N`	New Map
`Ctrl + E`	Open Editor
`Ctrl + R`	Open Rule Editor
`Ctrl + S`	Save current file
`Ctrl + D`	In Function Editor: Duplicate
`Ctrl + C / V`	In Function Editor: Copy & Paste
`Ctrl + Z`	When paused: Undo
`Ctrl + Shift + Z`	When paused: Redo