# grid.conf
dir_base|dir_base_directory=	# base directory in which all subordinated files can be found
GridType|type=sp1D	# selection: sp1D|sp3D|pp1D|pp3D :grid type sp = spherical, pp = plane parallel, 1D or 3D
planet_radius|Re|earth_radius=6377.500000	# [km] radius of the planet for spherical grids
ground_level|ground_altitude=0.000000	# [km] ground height level
fn_longitude_grid|fn_phi_grid=file	# [degree] 1 column
fn_colatitude_grid|fn_theta=file	# [degree] 1 column
fn_altitude_grid=file	# [km] 1 column
fn_X_grid=file	# [km] 1 column
fn_Y_grid=file	# [km] 1 column
fn_Z_grid=file	# [km] 1 column
b_cyclic_x=no	# cyclic x coordinate?
b_cyclic_y=no	# cyclic y coordinate?
b_cyclic_z=no	# cyclic z coordinate?
b_s3d_one_longitude_cell=no	# only one huge longitude cell?
b_s3d_one_colatitude_cell=no	# only one huge colatitude cell?