Those are commands defined in ARINC 424 which are programmable but only when designing SIDs oder STARs with a software which can write the required format for the FMS.
Some FMS actually allow construction of those within the FMS (the UNS do I think) but on the Airbus there is no way to create such an instruction by the pilot.
(Well, you could select some departure which has a 3000' turning point and delete everything around it and use the point only, but in most cases this will not be practical as you can select only one departure.)