Apple Color 1.5 - Manual (Page 290)

New nodes always appear disconnected in the Node view.
To insert a new node between two nodes that are already connected
µ
Drag a node from the Node list on top of the noodle connecting any two nodes, and
drop it when the noodle turns blue.
To automatically attach a new node to the input or output of a previously created
node
µ
Drag a node from the Node list so that the hand pointer is directly on top of a disconnected
input or output, then drop it.
The new node appears with a noodle connecting it to the node input or output you
dropped it onto.
To delete one or more nodes from the Node view
µ
Select one or more nodes in the Node view, then press Delete or Forward Delete.
The node disappears, and any noodles that were connected to it are disconnected.
To connect the output of one node to the input of another
µ
Drag a noodle from the output of one node to the input of another.
Noodles are green while they’re being created, but turn gray once they’re connected.
290 Chapter 11 The Color FX Room