A quick question about the LAMMPS documentation

Dear LAMMPS users/developers,

I notice that recently on the page for commands (http://lammps.sandia.gov/doc/Section_commands.html#comm), many of them now with addition marks like (o), (co), ©. I tried to find what do these symbols mean but failed. So could anybody tell me what are these symbols for? Thanks.

Best
Ming Ma

Dear LAMMPS users/developers,

I notice that recently on the page for commands (http://lammps.sandia.gov/doc/Section_commands.html#comm), many of them now with addition marks like (o), (co), ©. I tried to find what do these symbols mean but failed. So could anybody tell me what are these symbols for? Thanks.

It is listed on very same page. Multiple times.

Thanks, I found the explanations.

Best
Ming