Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 1234]

Nl61
NEventSystem
NTiming
CAbstractTimer
CAsyncTimer
CEvent
CEventBus	This is an event bus leveraging l61::EventSystem::Event
NExtensionSystem
CExtensionManager
Cl61_api_extension_t
Clex61_header_t
CNativeExtension	Handling native extensions
Nmeta
Nnulling
Cnull_t
CNullableMark
CNullAccessException
Cis_eventBus_freq_compatible
Cnull_t
CNullableMark
NRosettaSystem
CEnvironmentVariable	A utility class for accessing environment variables by name
NScriptEngine
CBuildScript
CFileBackedScriptEnvironment
CRunnableScriptEnvironment
CScriptEnvironment
CConfigRecord
Cl61_stat
CObject
CProgramStatus
Nnlohmann
Cadl_serializer< T >
Nstd
Cformatter< l61::EventSystem::bus_frequency_t >
Cformatter< l61::ScriptMode >
Cformatter< T >
Chash< T >
CBaseEntryPoint
CFsEntryPoint
CLua61EntryPoint