Hi, I want to modify the width of beta strands, so I use the command: car style strand xsection rect width 1 and it works very well. Now I want to modify only certain strands, so I use: car style strand xsection rect width 1 car style #2-10 strand xsection rect width 0.1 for the later command, I get the error "expected a keyword". But, when I use the same type of command for helices it works well: cartoon style #2-10 width 0.1 thick 0.1 Is there something I'm doing wrong in the script or it is not possible for strands? Thank you for your help. Vincent -- Vincent Chaptal, PhD CNRS research director Team leader Drug Resistance and Membrane Proteins Lab MMSB -UMR5086 7 passage du Vercors 69007 LYON FRANCE +33 4 37 65 29 01 https://mmsb.cnrs.fr/en/team/drug-resistance-and-membrane-proteins-drmp/