[Ifeffit] HELP! EXAFS calculation for "+2" charged molecule

Dear FEFF users, Hi, I am using FEFF9. I would like to calculate EXAFS spectrum of “+2” charged molecule. According to the manual “feff90_users_guide.pdf”, in pages 33-34, I thought maybe I ccould use ION card. In page 34, in “ION 1 0.2”, what do “1” and “0.2” mean? Can you help me? Thank you. Zin