Here is a list of all documented namespaces with brief descriptions:

[detail level 12]

▼NACalc	The ACalc namespace provides various functions for calculations that are performed outside of the database. This includes tasks like converting different units and formats, or functions calculating block time or night time
CNightTimeValues	The NightTimeValues struct encapsulates values relating to night time that are needed by the NewFlightDialog
NADateTime
NALog	The ALog namespace encapsulates constants and functions used to provide logging to files and logging to console (stdout)
NAStat
NATime
NImportCrewlounge
▼NOPL	A namespace to collect constants and enums used throughout the application
NAssets
NDb
NStyles
CUserDataState	The UserDateState struct caches the current number of entries in relevant database tables for fast access
CDatabase	The DB class encapsulates the SQL database by providing fast access to hot database data
CDbCompletionData	Provides data for QCompleters and QHashs
CDbSummary	Collects summaries of entries and relevant data from the database
CRow	Interface for retreiving and submitting entries from the database. It is a bass class and when instantiated, the appropriate subclass should be used
CAircraftEntry
CTailEntry
CPilotEntry
CSimulatorEntry
CFlightEntry
CCurrencyEntry
CANotificationHandler	Handles displaying of user-directed messages. It displays information to the user in a QMessageBox and forwards the displayed message to ALog so it is written to the console and log files. The INFO, WARN and CRIT makros provide convenient access
COplGlobals	Encapsulates non-POD globals to avoid making them static. It is available as a global static object via the OPL::GLOBAL makro and may be used as if it were a pointer, guaranteed to be initialized exactly once. For more information, see (Q_GLOBAL_STATIC)[https://doc.qt.io/qt-5/qglobalstatic.html#details]