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

CArguments	Parsed commandline arguments
CBoard	Game board, including the minefield, placed flags and uncovered cells
CConsole	Terminal input/output handle
CGame	Game
CGameMenuView
CGameView	Text user interface view of a Game
CInput
CInterface	User interface
CInvalidSaveData	Save data that was attempted to be deserialized is invalid
CLeftoverPositionalArgument	Too many positional arguments
CMenu
CMenuOption
CMinefield	Field of cells, each being either a mine or a blank space
CMove	Move made during a play
CNoMinefield	The board has no associated minefield
CPlay	Finished play of the game
CRepeatedOption	Option repeated too many times
CTooManyMines	The number of mines is more than what is possible given the size of the minefield
CUnknownOption	Unknown option argument