understanding AUXSCORE card?

I want implement AUXSCORE card but have one question.

why do I need to set these indices?

    WHAT(4) : lower bound index (or corresponding name) of the indices of
the
                detectors in which the associated scoring is activated (see
                Note 1)
                ("From detector WHAT(4)....")
                Default = 1.0

      WHAT(5) : upper bound index (or corresponding name) of the indices of
the
                detectors in which the associated scoring is activated (see
                Note 1)
                ("to detector WHAT(5)....")
                Default = WHAT(4)

As I understand.

1. I should set many USRTRACK (or USRBIN) cards for various particle types
(Neutron, Photon, ...) in a given region and last USRTRACK (or USRBIN)
card with part-type: DOSE-EQ,

2. then by setting these indices it gives AUXSCORE card information that
DOSES according that USRTRACK or USRBIN cards should be calculated.

3. So it calculates total EQ. DOSE generated by (Neutron, Photon, ..ie..)
together. And it doesn't calculate DOSE for particles, for which
USRTRACK (or USRBIN) cards are not exist.

4. What is better use USRBIN or USRTRACK to get EQ-DOSE distribution in
a space.

I want calculate TOTAL dose generated by some elementary ( outside of
concrete box) particles and If possible by all type of particles .
Below I attached my input file.
Give me any other advices if you could.

Thanks!