Although the layout of any graph is calculated automatically, you can move any node in a graph manually. This can be useful if the information in the graph is dense enough that some nodes are overlapping others.
To move the selected node, hold down the Shift key and select and drag the node to the desired location.
Figure 6.3 Moving a node in a graph
At any time, you can choose Reset Graph Layout from the context menu to restore the nodes to their original positions.
LispWorks IDE User Guide (Macintosh version) - 13 Sep 2017