= {
"Initial number of grid points. Specify one of: a single number, a "
"list representing [r, theta, perp], or such a list for every block in "
"the domain. Here 'r' is the radial direction normal to the inner and "
"outer boundaries, 'theta' is the periodic direction, and 'perp' is "
"the third direction. The exception to this is that for spherical "
"shell blocks groups ('InnerSphereA', 'InnerSphereB', 'OuterSphere'),"
"you must instead specify grid points as [r, L_max]. The exception to "
"this is if a single number is specified for global initial grid "
"points."}