Rodolfo Medina a écrit : > Thanks for your suggestion. But you didn't say how to define \doleftmark and > \dorightmark. > > Rodolfo > Indeed. The lines \doleftmark#1#2{#1} \dorightmark#1#2{#2} were lacking a \def: \def\doleftmark#1#2{#1} \def\dorightmark#1#2{#2} Paul