General attributes consist of the following:
Click the Input Connection button to display the first input connection node for the currently displayed node. Right-click the Input Connection button to display a list of all input connection nodes. You can then select a node from this list to display in the Attribute Editor.
Click the Output Connection button to display the first output connection node for the currently displayed node. Right-click the Output Connection button to display a list of all output connection nodes. You can then select a node from this list to display in the Attribute Editor.