The Graph is where you arrange your conversation flow and connect the zazubot blocks together.

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Gestures

In the user preferences, under the Graph Gestures section, you can choose between Mouse and Trackpad gestures.

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Mouse

Select: Shift + Left click drag

Zoom: Ctrl + Mouse wheel

Pan: Left click drag or Mouse wheel for vertical pan and Shift + Mouse wheel for horizontal pan

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Trackpad

Select: Click + drag

Zoom: Pinch

Pan: Use two finger