Here are the data structures with brief descriptions:

Cdither_matrix_impl
Cstp_cached_curve_t
Cstp_color
Cstp_colorfuncs_t
Cstp_curve_point_t	Point (x,y) for piecewise curve
Cstp_dither_matrix_generic
Cstp_dither_matrix_normal
Cstp_dither_matrix_short
Cstp_dotsize
Cstp_double_bound_t	Double_bound (range) parameter
Cstp_family
Cstp_image	The image type is an abstract data type for interfacing with the image creation program
Cstp_int_bound_t	Int_bound (range) parameter
Cstp_lineactive_t
Cstp_linebounds_t
Cstp_linebufs_t
Cstp_linecount_t
Cstp_lineoff_t
Cstp_module
Cstp_module_version
Cstp_mxml_attr_s
Cstp_mxml_node_s
Cstp_mxml_text_s
Cstp_mxml_value_s
Cstp_mxml_value_u
Cstp_papersize_t	The papersize data type
Cstp_param_string_t	String parameter
Cstp_parameter_t	Parameter description
Cstp_pass_t
Cstp_printfuncs_t
Cstp_raw_t	Raw parameter
Cstp_shade
Cstp_weave_t