| _fluid_gen_t | SoundFont generator structure |
| _fluid_mod_t | Modulator structure |
| _fluid_preset_t | Virtual SoundFont preset |
| _fluid_sample_t | Virtual SoundFont sample |
| _fluid_sfloader_t | SoundFont loader structure |
| _fluid_sfont_t | Virtual SoundFont instance structure |
| _fluid_synth_channel_info_t | Channel information structure for fluid_synth_get_channel_info() |
| fluid_cmd_t | Shell command information structure |
1.6.1