.. toctree:: buildingblocks/CoreClasses.rst buildingblocks/PhysicsDefinitions.rst buildingblocks/PropagationModules.rst buildingblocks/EnergyLosses.rst buildingblocks/MagneticFields.rst buildingblocks/Observers.rst buildingblocks/Condition.rst buildingblocks/SourceFeatures.rst buildingblocks/Output.rst buildingblocks/MagneticLens.rst buildingblocks/Tools.rst buildingblocks/PhotonFields.rst