program mainuse FEMDomainClassuse FEMSolverClassimplicit none type(FEMDomain_)::cube(1)type(FEMSolver_)::solverinteger(int32)::i,jcall cube(1)%create("Cube3D")call cube(1)%vtk("cube")! short mode:call solver%init(FEMDomains=cube(:),DOF=3)end program main