2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/183357I review recent insights and open questions connected with the production of eta--mesons from hadrons.12 pages. Talk presented at the Eta'05 Workshop on production and decay of eta and eta' mesons 15th--18th September 2005, Jagellonian University, Cracow, PolandNuclear Theorytext