By the way, in case it makes a difference, I'm using ImageMagick-perl package from Red Hat, which claims to be 6.2.8. -- Illtud Daniel illtud.daniel at llgc.org.uk Uwch Ddadansoddwr Systemau Senior Systems Analyst Llyfrgell Genedlaethol Cymru National Library of Wales Yn siarad drosof fy hun, nid LlGC - Speaking personally, not for NLW