Creation of an arrow:

1. Select the "Arrow" tool in the list of annotations and ROIs. (See "How to create 2D annotations")





2. Bring your mouse above one image in a display area and press the left button to define the starting point of the arrow.
3. While holding the left button, drag your mouse to define the second point of the arrow.
4. Release the left mouse button.

Modify the arrow position:

1. Select the arrow object by clicking on it with the left mouse button. When an arrow object is selected, you can see a green circle at each extremity of the arrow.
2. Keep your mouse anywhere between both extremities of the arrow, press the left mouse button and hold it.
3. While holding the left mouse button, drag your mouse to move the position of the arrow.
4. Release the left mouse button.

Modify the extremity points of the arrow:

1. Select the arrow object by clicking on it with the left mouse button. When an arrow object is selected, you can see a green circle at each extremity of the arrow.
2. Keep your mouse above one of the extremities of the arrow (inside its green circle), press the left mouse button and hold it.
3. While holding the left mouse button, drag your mouse to move the extremity of the arrow.
4. Release the left mouse button.

Modify the properties of the arrow:

1. Select the arrow object by clicking on it with the left mouse button. When an arrow object is selected, you can see a green circle at each extremity of the arrow.
2. In the properties window of annotations and ROIs, modify the color, width or style of the arrow.