Making the connections

object my_circuit
  inherits( awf: amplifier_with_feedback +
            i  : inverter
          )
  i.input = awf.output
}

The = connects together two attributes, making them equal.

It is useful to have an abbreviated declaration, so that if there is only one instance of an object, the programmer can use it without having to think up a unique name:

object my_circuit
  inherits( amplifier_with_feedback +
            inverter
          )
  inverter.input = amplifier_with_feedback.output
}