struct PK_TOPOL_range_local_o_s { int o_t_version; --- version number of option structure PK_LOGICAL_t have_tolerance; --- (PK_LOGICAL_false) double tolerance; --- tolerance }; typedef struct PK_TOPOL_range_local_o_s PK_TOPOL_range_local_o_t; Holds optional controls for finding the local minimum separations between two topological entities. The option structure defines options applicable to finding the local minimum separations between two topological entities.