This dialog is displayed when the Properties option is chosen with a component selected.
It shows you the nets of each of the pins on the selected component.
Shortcuts
Default Keys: I or Alt+Enter
Default Menu: Edit
Command: Properties
Locating this option
Available from: Edit menu > Properties option
Available from: Context menu > Properties option
Available from: Shortcut key > I
Using The Nets on Pins Properties Dialog
Select a component enter properties. Choose the Nets on Pins tab and the following dialog is shown: