See ddd.lip6.fr for more information about this project.
Although some effort has been invested in creating these doxy pages, the actual source files often contain more comments which are not doxy-compliant.
For SDD: SDD.h (Basic set operations) SHom.h (Homomorphisms)
For DDD: DDD.h (Basic set operations) Hom.h (Homomorphisms)
Then, as a starting point, have a look at the pages GSDD, and GShom.
Remember that garbage collection should be done by invoking MemoryManager::garbage().
Some useful annex functionality can be found in statistic.hpp and util/dotExporter.h
1.5.9