Shift + Click
anywhere on the screen (white space) to create a new node.
Shift + Click + Dragging
from one node to another will create a one way connection between them.
Left Clicking
on a node will select it and bring up the inspector on the right hand side, where you can change the event associated with it.
Left Clicking + Dragging
on a node will reposition it.
Selecting a node and pressing
Delete
or
Backspace
will delete the node and any connections to and from it.
Similarly, selecting a connection and pressing
Delete
or
Backspace
will remove the connection.
Mouse Wheel Up
and
Mouse Wheel Down
will zoom the graph accordingly.