= {
"Initial refinement level in [r, theta]. If one pair is given, it will "
"be applied to all blocks, otherwise each shell can be specified.\n"
"Note: the half-wedges will have their theta values decremented by "
"one.\n"
"Note: the inner square, if included, will have refinement set to "
"the theta value for the center half-circle for both dimensions "
"(decremented by one in the halved dimension)."}