This bug is Interface Builder should use +/- buttons for Outlets and Actions lists. It was filed on 2006-04-21 at 21:06 PDT.
IB uses "Add" and "Remove" buttons on the Outlets and Actions lists; it should use +/- instead, like the Accounts prefpane.
Steps to Reproduce:
- Inspect a class in the nib.
- Switch to the Attributes Inspector.
IB shows small square buttons labeled + and - like the Accounts prefpane has.
IB shows plain "Add" and "Remove" push buttons.