2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/7181It is argued that much of the observed magnetic helicity losses at the solar surface may represent a reduction of an otherwise more dominant nonlinearity of solar and stellar dynamos. This nonlinearity is proportional to the internal twist (as opposed to writhe) of helical and sigmoidal surface structures.4 pages, 2 figures, to appear in Magnetic field and Helicity in the Sun and the Heliosphere, eds: D. Rust & B. Schmieder, ASP Conference Series, XXV JD3 (2003)Astrophysicstext