B  9            This line is u _n _d _e _r _l _i _n _e _. _    Th is  li ne is bb boo oll ldd d.. .    Th is  line  is u_u un_n nd_d de_e er_r rl_l li_i in_n ne_e e  _a_a an_n nd_d d  _b_b bo_o ol_l ld_d d._. .    This line is  S  u  b Script.    This line is  S  u  p  e  r Script.                                                B