Here are the data structures with brief descriptions:

Cplugntrust_apdu_t	APDU data object
Cplugntrust_atr_t	Data after reset
Cplugntrust_cfg_t	Plug n Trust Click configuration object
Cplugntrust_frame_data_t	Communication frame data object
Cplugntrust_t	Plug n Trust Click context object
Cplugntrust_version_info_t	Version info data