typedef int PK_render_unfix_t; This field can take any one of the following values. PK_render_unfix_no_c : no rendering of unfixed blends (default) PK_render_unfix_attrib_c : render unfixed blends as defined by blend attribute PK_render_unfix_yes_c : render unfixed blends using spec in PK_TOPOL_render_line_o_t