2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39344I present a quick overview of the current status of Chiral perturbation theory in the meson sector. To illustrate the successes and some problems in the description of the phenomenology, I focus on a few selected examples that are relevant for DAFNE.Invited talk at DAFNE99, Frascati, November 16-19, 1999, 16 pages, 2 figuresHigh Energy Physics - Phenomenologytext