This report is a continuation of the preceding review talk. I shall describe general purpose computer programs that have been developed in Professor Seaton’s group at University College London. Other speakers will present results produced with them.

The programs require a minimum of input. General purpose means; not restricted to one ion or just one isoelectronic sequence. High speed is achieved by using approximations suitable for medium and highly ionized light atoms. The programs allow fully for configuration mixing, which plays an important role in ion calculations. Equations in M. J. Seaton’s review will be referred to as (S.number).