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

[detail level 1234]

Nfmt
Cformatter< xt::xarray< T > >
Noiseau
Ndg
Nnodal
CElement
CRefElement
CRefHexahedron
CRefLine	Represents a reference line element used in nodal Discontinuous Galerkin methods
CRefQuadrilateral	Represents a reference quadrilateral element for nodal Discontinuous Galerkin methods
CRefTetrahedron	Represents a reference tetrahedron element for nodal Discontinuous Galerkin methods
CRefTriangle	Represents a reference triangular element for nodal Discontinuous Galerkin methods
CDGSpace
Nio
CMeshFormatSection
CEntityEntry
CEntitiesSection
CPhysicalNamesSection
CNodesBlock
CNodesSection
CElementBlock
CElementSection
CGMSHFile
Nmesh
CCell
CPointCell
CIntervalCell
CTriangleCell
CQuadrilateralCell
CTetrahedronCell
CHexahedronCell
CGeometry
CMesh
CTopology
Nutils
CJaggedArray
CRowIterator
Nplt
CAxesSubPlot
CFigure
Npybind11
Ndetail
Ctype_caster< xt::xarray< T > >
Ctype_caster< E >