Here are the data structures with brief descriptions:

Cws_display_tile_4bpp_t
Cws_display_tile_t
Cws_eeprom_handle_t
Cws_rtc_date_t
Cws_rtc_datetime_t
Cws_rtc_time_t
Cws_sound_wave_t
Cws_sound_wavetable_t
Cws_sprite_t