>perl -MO=Terse -e "print qq{Hello, world!\n};"
LISTOP (0x1ab0b04) leave [1]
    OP (0x1ab8bac) enter
    COP (0x1ab0b3c) nextstate
    LISTOP (0x1ab0bb8) print
        OP (0x1ab0b90) pushmark
        SVOP (0x1ab0be0) const  SPECIAL #0 Nullsv
-e syntax OK

##</code><code>##

>perl -MO=Concise -e "print qq{Hello, world!\n};"
6  <@> leave[t1] vKP/REFC ->(end)
1     <0> enter ->2
2     <;> nextstate(main 5 -e:1) v ->3
5     <@> print vK ->6
3        <0> pushmark s ->4
4        <$> const(SPECIAL Null)[t2] s ->5
-e syntax OK

##</code><code>##

>perl -MO=Debug -e "print qq{Hello, world!\n};"
LISTOP (0x1bb2ec0)
        op_next         0x0
        op_sibling      0x0
        op_ppaddr       PL_ppaddr[OP_LEAVE]
        op_targ         1
        op_type         178
        op_seq          6612
        op_flags        13
        op_private      64
        op_first        0x1ab8b84
        op_last         0x1bb2f84
        op_children     3
OP (0x1ab8b84)
        op_next         0x1bb2f08
        op_sibling      0x1bb2f08
        op_ppaddr       PL_ppaddr[OP_ENTER]
        op_targ         0
        op_type         177
        op_seq          6607
        op_flags        0
        op_private      0
COP (0x1bb2f08)
        op_next         0x1bb2f5c
        op_sibling      0x1bb2f84
        op_ppaddr       PL_ppaddr[OP_NEXTSTATE]
        op_targ         0
        op_type         174
        op_seq          6608
        op_flags        1
        op_private      0
        cop_label
        cop_stashpv     main
        cop_file        -e
        cop_seq         6608
        cop_arybase     0
        cop_line        1
        cop_warnings    0x0
.
.
.