Dear All, I can make .defattr files that work well for render-by-attribute, if I specify residues only as :arg or :206 (examples). However if I want to specify a particular residue in a particular chain (e.g. /A:206), I can load a .defattr file with no error, but the attribute is not found by the render-by-attribute or select-by-attribute capabilities. (I did not attempt the retired :206.A notation. Maybe I should ?) Has anyone gotten chain-specific resIDs to work in a .defattr file please? Thank you - • - • - • - • - • - • - • - • - A.-F. Miller, Ph. D. (she/elle/sie) Gill Eminent Professor Distinguished Prof. of Arts and Sciences Professor of Chemistry University of Kentucky https://uky.zoom.us/j/3250841836 https://millerlablive.wordpress.com/