| _dk_fig_ah_t_ | Arrowhead style |
| _dk_fig_cc_t_ | Color cell |
| _dk_fig_object_t_ | Fig object |
| _dk_fig_pl_pt_t_ | Polyline/polygon type |
| _dk_fig_sp_pt_t_ | Spline point type |
| _dk_fig_style_t_ | Style structure |
| _dk_fig_writer_t_ | Writer object for entire drawing |
| _dk_font_ | Font description |
| _dk_storage_iterator | Storage iterator |
| _dk_storage_node | Internal node for dk_storage_t |
| _font_mapping_ | Complete replacement set as obtained from file |
| _font_replacement_ | One replacement candidate for a font |
| _name_and_code_ | Assign codes to priority names |
| _one_font_mapping | All replacement candidates for one font |
| _prefix_info_t_ | Connect prefix and database type |
| dk_app_t | Command line application |
| dk_bif_jfif_analyze_t | Structure for direct analysis of JPEG files |
| dk_bitfield_t | Bit field |
| dk_bitmatrix_t | Bit matrix |
| dk_bitshift_t | Bit shifter |
| dk_bitshift_wrapper_t | Perl XS wrapper for dk_bitshift_t |
| dk_dir_t | Directory traversal |
| dk_echo_t | Terminal echo handling |
| dk_ip_addr_t | IP address |
| dk_key_value_t | Key/value pair |
| dk_le_ct_t | LaTeX representation of a character |
| dk_le_t | LaTeX encoding table |
| dk_le_wrapper_t | Perl XS wrapper for dk_le_t |
| dk_log_t | Logging structure (obsoleted) |
| dk_of_cell_t | Output filter cell |
| dk_of_t | Output filter |
| dk_preference_t | Preference |
| dk_ss_t | String search structure (obsoleted) |
| dk_stat_t | File status information |
| dk_storage_t | Object storage |
| dk_stream_api_t | Internal API for dk_stream_t |
| dk_stream_suffix_t | File suffix table entry |
| dk_stream_t | I/O stream |
| dk_stream_wrapper_t | I/O stream wrapper for Perl XS |
| dk_string_finder_t | String finder |
| dk_stt_t | String table |
| dk_tcpip_t | TCP end point |
| dk_tokenizer_t | Tokenizer |
| DKPREF | Program configuration |
| file_finder_t | Data structure used to search for a file |
| FileAction | Data to register context menu entries |
| image_type | Connect file name suffix to image type |
| Person | Description of a person |
| stt_entry | String table entry |
1.5.8