| chromo_t | Chromosome structure | 
| domain_t | Domain structure | 
| ext_t | Extension structure | 
| fitnessfunc_t | Structure describing a fitness function | 
| miscinfo_t | Structure holding miscellaneous information about the timetable | 
| module_t | Information about a module | 
| modulehandler_t | Structure describing a restriction handler | 
| modulelist_t | Information about loaded modules | 
| moduleoption_t | Structure holding a module option | 
| outputext_t | Output extension structure | 
| population_t | Population structure | 
| precalcfunc_t | Structure describing a precalculate function | 
| resource_t | Resource structure | 
| resourcetype_t | Resource type structure | 
| slist_t | Slist structure | 
| table_t | Timetable structure | 
| tupleinfo_t | This structure holds information about defined tuples (events) | 
| tuplelist_t | A list of tuple IDs | 
| updaterfunc_t | Structure describing an updater function | 
 1.5.2
 1.5.2