2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43588This paper gives a short summary of some of the aspects of charmonium which can be addressed at BES and CLEO-c and other $e^+e^-$ facilities. These topics include the spectroscopy of charmonium states, radiative transitions, $e^+e^-$ widths, two-photon widths, hadron loop effects and open-flavor strong decays.15 pages, 2 figures. Expanded version of an invited presentation to the CLEO-c and BESIII Joint Workshop on Charm, QCD and Tau Physics (Beijing, 13-15 Jan 2004). Uses besscleo.styHigh Energy Physics - Phenomenologytext