2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/50696I review the construction of an action for open superstring field theory which does not suffer from the contact term problems of other approaches. This action resembles a Wess-Zumino-Witten action and can be constructed in a manifestly D=4 super-Poincaré covariant manner. This review is based on lectures given at the ICTP Latin-American String School in Mexico City and the Komaba 2000 Workshop in Tokyo.17 pages latexHigh Energy Physics - Theorytext