2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/10744Combining information on absorbing material in AGN from X-ray and the UV creates a powerful investigative tool. Here we give examples from both low and high redshift.4 pages, 1 figure. Uses aspconf.sty, included. To be published in the Proceedings of IAU Colloquium 159 on "Emission Lines in Active Galaxies: New Methods and Techniques."Astrophysicstext