Hello Michael, Indentation of structure definitions, shell session logs, and so on When structure definitions, shell session logs, and so on are included in running text, indent them by 4 spaces (i.e., a block enclosed by .in +4n and .in), format them using the .EX and EE macros, and surround them with suitable paragraph markers (either .PP or .IP). For example: .PP .in +4n .EX int main(int argc, char *argv[]) { return 0; } .EE .in .PP That could be simplified to the following, right?: .IP .EX int main(int argc, char *argv[]) { return 0; } .EE .PP Or is there any difference? Thanks, Alex