Here is a list of all documented typedefs with links to the documentation:

sci_Bitrate : sci.h
sci_Errcode : sci.h
sci_Object : sci.h
sci_Object_Type : sci.h
sci_Plug_Func : sci.h
sci_Plug_Lencalc : sci.h
sci_Struc : sci.h
socan_hdl : socan.h
socan_obj_h : socan.h
sq_elm : socan.c