=
"Enable hyperboloidal slicing by specifying the transition points for "
"the boost function. The boost function transitions from -1 to zero "
"between the first two points and from zero to 1 between the last "
"two points. The two points can be the same, in which case the "
"transition "
"is discontinuous (vtu slicing) and the jump must be handled by the DG "
"scheme (see option 'NullSlicingBlocks'). "
"The effective source can only be evaluated where the "
"boost function is zero, so the regularized region must be between "
"the second and third points."