Systematic cross-referencing has been done for the identification of double star components of the IDS (1984.0) catalogue and cluster stars. This information may be reached with the command ids.
> ngc 2422
> ids list the file.
> ids 45 list all components associated with star no 45.
> ids ads -eq 6216 list the lines containing the ADS number 6216.
> ids sep -lt 10 select the systems having a separation smaller than 10 "arc. Options "-gt" and -i" can also be used.
> ids mult -eq AB select the entries for AB components.