This input file is the one of the series of three "sample-kits". It concerns the use of Fourier series to generate the 2D BFC grids. It is wholly focused on calculation of grid corner coordinates. Therefore, no other actions are supported by input data.
It also differs from the previous examples in being arranged as unsteady problem: at each time moment the new BFC grid is PLANTed and dumped into specified file to be viewed by PHOTON.