A_ADVECT_SCALAR  1
A_ADVECT_SCALAR_MONO  1
A_ADVECT_SCALAR_PD  1
A_ADVECT_SCALAR_WENO  1
A_ADVECT_SCALAR_WENOPD  1
A_HORIZONTAL_DIFFUSION  1
A_SET_TEND  1
A_SIXTH_ORDER_DIFFUSION  1
A_VERTICAL_DIFFUSION  1
A_VERTICAL_DIFFUSION_MP  1
A_ZERO_TEND  3