Hi, I have got a lot of files. For example, X has got 3 Xrefs: X2 X3 X4 Y has got 3 Xrefs Y2 Y3 Y4 Z has got 3 xrefs Z2 Z3 Z4 In X2, X3, X4 Y2 Y3... I have the same layers names I would like to manage in X my layers state (switch on or off diffent layers), save my layers state and appky in Y and Z I can't do it my state layers manager because the Xref doesn't have the same name. Have you got an idea to do it quickly? Thanks in advance, Frederic