Class List
Here are the classes, structs, unions and interfaces with brief descriptions:
[detail level 1234]
 Nbasis
 Nargparse
 C_ActionsContainer
 C_AppendAction
 C_AppendConstAction
 C_ArgumentGroup
 C_AttributeHolder
 C_CountAction
 C_HelpAction
 C_MutuallyExclusiveGroup
 C_StoreAction
 C_StoreConstAction
 C_StoreFalseAction
 C_StoreTrueAction
 C_SubParsersAction
 C_ChoicesPseudoAction
 C_VersionAction
 CAction
 CArgumentDefaultsHelpFormatter
 CArgumentError
 CArgumentParser
 CArgumentTypeError
 CFileType
 CHelpFormatter
 C_Section
 CNamespace
 CRawDescriptionHelpFormatter
 CRawTextHelpFormatter
 Nos
 Nutil
 CIExecutableTargetInfoProvides information about executable build targets
 CSubprocessErrorException type thrown by execute()
 Nutilities
 CSubprocessErrorException thrown when command execution failed
 Nwhich
 CWhichError
 CCmdLineManages command line definition and parsing of arguments
 CXorHandlerHandles lists of Arg's that are to be XOR'd on the command-line
 CExistingDirectoryConstraintConstrain argument values to paths of existing directories
 CExistingFileConstraintConstrain argument values to paths of existing files
 CMultiArgAn argument that allows multiple values of type T to be specified
 CNegativeValueConstraintConstrain argument values to negative values
 CNonZeroValueConstraintConstrain argument values to non-zero values
 CPositiveValueConstraintConstrain argument values to positive values
 CSubprocessPlatform-independent interface to create and control a subprocess
 CValueArgAn argument that allows multiple values of type T to be specified
 CZeroOrNegativeValueConstraintConstrain argument values to zero or negative values
 CZeroOrPositiveValueConstraintConstrain argument values to zero or positive values
 Nget_python_lib
 Ceasy_install_default
 CBinaryDiffVisitorVisitor used to handle –diff option
 CCompareVisitorVisitor used to handle –compare option
 CJTap
 CLineDiffVisitorVisitor used to handle –diff-lines option
 CRegressionTestStructure holding arguments to regression test options and currently set tolerances to be used for the regression test