C++ reference for the three libraries that make up the engine's own code:

ADSIDAC (src/ADSIDAC): the simulation engine. Start from the module list: Core Engine, Dynamic Event Tree, Crew Cognitive Model (IDAC), Emergency Operating Procedures, Reasoning Machine, Control Room, Reliability Models, Thermal-Hydraulic Interface, Simulation Scheduler, MPI Parallel Execution.
BNCore (src/BNCore, namespace bncore): exact Bayesian network inference on a junction tree. See BNCore Bayesian Network Inference.
FaultTree (src/FaultTree, namespace faulttree): parsing and exact quantification of .fta fault trees on BNCore. See FaultTree Quantification.

RELAP5 (src/Relap, Fortran) and HCL (src/HCL) are not part of this reference. The user and developer guides are the VitePress site this reference is published with.