.. _shortcuts:

Keyboard Shortcuts
===================

In order to make the annotation workflow as efficient as possible, the annotation tab offers several shortcuts.

General
-------

* | **F1, F2, F3, ...**
  | Switch to the first (or second, third, ...) annotation mode.

* | **1, 2, 3, ...**
  | Switch to the first (or second, third, ...) active label.

* | **Alt + 1, Alt + 2, Alt + 3, ...**
  | Switch to the first (or second, third, ...) windowing preset.

* | **Ctrl + 1, Ctrl + 2, Ctrl + 3, ...**
  | Toggle maximize for the axial, sagittal, coronal, 3D or 2D view.

* | **Left, Right**
  | Load the next (or previous) dataset.

* | **R**
  | Reset all views to make the image fit.

* | **C**
  | For 3D datasets, move the current MPR intersection to the center of the views.

* | **L**
  | Toggle visibility of the label map.

* | **W**
  | Optimize windowing in a rectangular region that can be selected in one of the views

* | **Page Up, Page Down**
  | Move forward/backward in an image set. The step can be configured in the settings.

* | **Ctrl + Z**
  | Undo the last annotation change (brush stroke, algorithm, etc.)

* | **Ctrl + Y**
  | Redo the last annotation change (brush stroke, algorithm, etc.)

* | **Shift + Mouse**
  | Adjust the brightness and contrast of the image.
  | Move the mouse left/right to change the level, and up/down to change the window.


Brush
------

* | **Ctrl + Mouse Wheel**
  | Change the size of the brush

* | **Alt + Mouse Wheel**
  | Change the adaptiveness of the brush

* | **X**
  | Disable the brush adaptiveness, as long as the key is pressed.

* | **Space**
  | Toggle the brush. The standard zoom & pan interactions are active until the brush is re-enabled with space.

* | **S**
  | Toggle 'smoothing'

* | **D**
  | Toggle the '2D brush' mode

* | **T**
  | Toggle the 'contiguous' mode

* | **F**
  | Toggle the 'views follow brush' mode


Erase
-----

* | **T**
  | Clear active label

* | **A**
  | Clear all labels

* | **U**
  | Enable cutting

* | **E**
  | Enable eraser


ConnectedComponentsAction
-------------------------

* | **T**
  | Start analysis

* | **S**
  | Split manually

* | **A**
  | Assign manually


Refine
------

* | **K**
  | Shortcut for "Keep Largest Component".

* | **F**
  | Shortcut for "Fill Holes".

* | **D**
  | Shortcut for "Dilate".

* | **E**
  | Shortcut for "Erode".

* | **S**
  | Shortcut for "Smooth".

* | **I**
  | Shortcut for "Image-Based Refine".


Draw Contour
------------

* | **Space**
  | Shortcut for "Draw Contour".

* | **Del**
  | Shortcut for "Discard".

* | **Enter**
  | Shortcut for "Accept".


Geometric Annotations
---------------------

* | **A**
  | Create a new annotation.

* | **Alt + A**
  | Create a new landmark at slices intersection (only in 3D).

* | **Del**
  | Delete annotation.


Measurement Action
-------------------

* | **A**
  | Create a new measurement.