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Double-click on empty space to create a Node.
Click to select a Node. Select and drag to move a Node.
Click and drag on empty space to select multiple Nodes. Click on one of these nodes and drag to move all nodes.
Double-click on a Node to edit text and color.
Click the 'x' on a Node to delete it.
Click on the small black box below a Node and drag to create a Connection. Drag the connection over another Node to complete a Connection.
Hover over a connection and click to reassign it. Not assigning it while dragging will delete the connection.