2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42057In this paper, we review the role of a multi-TeV $e^+e^-$ linear collider to complete the mapping of the Higgs boson profile and studying heavier bosons in extended scenarios with more than one Higgs doublet.8 pages, 4 figures, to appear on the Proceedings of the Int. Workshop on Linear Colliders, LCWS2002, Jeju Island (Korea)High Energy Physics - Phenomenologytext