 #$MaintenanceAgreement, #$Reservation and #$Appointment. For
            assertions about what is supposed to be true, given some <a
            href="./agreement-vocab.html#Agreement">#$Agreement,</a> see
                <a href="./agreement-vocab.html#ist-Agreement">#$ist-Agreement.</a><br />
            <b>guid: </b>bd58afa3-9c29-11b1-9dad-c379636f7270<br />
            <b>direct instance of: </b>
            <a href="./top-vocab.html#ObjectType">#$ObjectType</a>  <br />
            <b>direct specializa