typedef int PK_BODY_owb_gap_fill_t;
This data type is used to specify how gaps at offset vertices should be filled.
It has three values:
PK_BODY_owb_gap_fill_round_c fill with circular arc
PK_BODY_owb_gap_fill_linear_c fill with tangent extension
PK_BODY_owb_gap_fill_natural_c fill with natural curve extension