Apple Shake 4 - Manual (Page 229)

Chapter 7 Using the Node View 229
• Right-click the first node, then choose Select > Associated Nodes from the shortcut
menu.
To select every node that’s connected above (upstream from) a selected node,
do one of the following:
m Press Shift-U.
m Right-click the selected node, then choose Select > Upstream Nodes from the shortcut
menu.
Note: To limit the selection to only the node above the currently selected one, choose
Select > Upstream 1 Level (or press Shift-Up Arrow).