different flavours of Swarm classes

[Marshall, James A R]

Hi,
  I've looked in the Swarm FAQ for this, and in the reference guide, but
can't find out why many of the Swarm classes are postfixed with C, S, or
CImpl. As I understand it Impl is an implementation of an interface, but can
someone tell me where to find out the significance of C and S?
  Thanks,
        James

---
Dr James A R Marshall
Container World Project - http://www.ese.ic.ac.uk/research/containerworld/
Department of Earth Sciences and Engineering, Imperial College, London
Tel: +44 (0)20 7594 7493
Fax: +44 (0)20 7594 7444


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