I'm not looking for the multi-level. When an element contains another one according to the browser tree structure, EA shows this link under the Owns/Owned by or Embeds//Owned by.
Prolaborate only supports relationships, and it would be nice this.
Opening Sparx EA Example > running the traceability on the Portable Audio Player SysML block, you will notice the additional entries supported by EA traceability: owns, embeds (and check the reverse link from the SysML parts or blocks underneath)
Another example with ArchiMate would be Application elements wirth components placed under (in the browser).
Thanks