# Keyboard and mouse shortcut mappings

|  | Main window
--- | --- | ---
|  | Key | Action
| CTRL+ | O | Open file(s)
| CTRL+ | Q | Quit application
|  | Histogram view
|  | Key | Action
|  | Left-button horizontal-drag | Read histogram values
|  | Middle-button vertical-drag | Scale histogram view
|  | Right-button horizontal-drag | Shift histogram-view towards lo high
|  | Wheel | Scale histogram-view
|  | Image View
|  | (Click in to set focus) |
|  | Key | Action
| CTRL+ | P | Print image-view (screenshot)
SHIFT+ | CTRL+ | P | Quick Print image-view (quick screenshot)
| ALT+ | Mouse wheel | Adjust effect brush size
SHIFT+ | ALT+ | Mouse wheel | Adjust effect parameter value
|  | Mouse wheel | Zoom in out
| CTRL+ | Mouse wheel | Rotate layers
| CTRL+ALT+ | Mouse wheel | Shift dynamics range towards low/high
SHIFT+ | CTRL+ALT+ | Mouse wheel | Scale dynamics range around it's mean value
| META+ | Mouse wheel | Adjust translucency
SHIFT+ | META+ | Mouse wheel | Adjust gamma correction
|  | Key | Action
|  | Mouse drag | Scroll view
CTRL+ |  | Mouse drag | Quick scroll view
|  | ↑ | Scroll up
|  | ↓ | Scroll down
|  | ← | Scroll left
|  | → | Scroll right
| CTRL+ | ↑ | Quick scroll up
| CTRL+ | ↓ | Quick scroll down
| CTRL+ | ← | Quick scroll left
| CTRL+ | → | Quick scroll right
|  | + | Zoom in
|  | - | Zoom out
|  | 1 | Zoom to full resolution (1:1)
|  | 2 | Zoom to selected layer extent
|  | 3 | Zoom to all layers extent
|  | Key | Action
|  | Delete | Delete selected layer
SHIFT+ |  | Delete | Delete all layers
|  | Home | Select previous layer
|  | End | Select next layer
SHIFT+ |  | Home | Select first layer
SHIFT+ |  | End | Select last layer
|  | Page Up | Move layer up within stack
|  | Page Down | Move layer down within stack
SHIFT+ |  | Page Up | Move layer to top of stack
SHIFT+ |  | Page Down | Move layer to bottom of stack
|  | A | Apply selected layer settings to All layers
|  | P | Use selected layer Projection as reference projection
|  | Q | Apply 2% Quantiles to viewed area of selected image layer
SHIFT+ |  | Q | Apply 2% Quantiles to full area of selected image layer
|  | Key | Action
|  | C | Switch to Chessboard effect
|  | D | Switch to local Dynamics or local contrast effect
|  | G | Switch to Gradient effect
|  | H | Switch to Horizontal swipe effect
|  | N | Switch to No effect
|  | S | Switch to Spectral angle effect
|  | T | Switch to local Translucency effect
|  | V | Switch to Vertical swipe effect
|  | Layer Stack
|  | Key | Action
|  | Delete | Delete selected layer
SHIFT+ |  | Delete | Delete all layers
| CTRL+ | Mouse wheel | Rotate layers up/down