typedef int PK_blend_trim_t; This data type is used to indicate how to trim the blend It has four values: PK_blend_trim_no_c Do not trim blend. The blend will not be trimmed to the wall extent. Its end boundaries will be constant parameter lines. PK_blend_trim_short_c Short trim to walls. The blend end boundaries will be the constant parameter lines determined by the wall boundaries such that the blend is as short as possible. PK_blend_trim_long_c Long trim to walls. The blend end boundaries will be the constant parameter lines determined by the wall boundaries such that the blend is as long as possible. PK_blend_trim_to_walls_c Trim blend to walls. The blend end boundaries will be determined by the wall boundaries. (default)