Base.@kwdef mutable struct GridStruct
    nz = nothing
    zP = nothing
    z = nothing
    dz = nothing
    NumFaces = nothing
    Faces = nothing
    NumEdges = nothing
    Edges = nothing
    NumNodes = nothing
    Nodes = nothing
    Form = nothing
    Type = nothing
    nBar = nothing
    Dim = nothing
    Rad = nothing
    NumEdgesI = nothing
    NumEdgesB = nothing
    vtkP = nothing
    ConnectivityList = nothing
    nBar3 = nothing
    KiteGrid = nothing
end
