ID_OFF_SIZE
#define NFANS_OFFSET(x) ((x * ID_OFF_SIZE) + 2)
ID_OFF_SIZE);
id_offset += ID_OFF_SIZE;
ID_OFF_SIZE);
id_offset += ID_OFF_SIZE;
#define NFANS_OFFSET(x) ((x * ID_OFF_SIZE) + 2)
ID_OFF_SIZE);
id_offset += ID_OFF_SIZE;
ID_OFF_SIZE);
id_offset += ID_OFF_SIZE;