Input is 
#!/usr/bin/perl
print "Hello World.\n"; print "Hulo";

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Output is 
COP (0x3327c98) nextstate .. COP (0x3327c98) nextstate
    COP (0x3327c98) nextstate
LISTOP (0x3327d34) leave .. LISTOP (0x3327d34) leave
    LISTOP (0x3327d34) leave
OP (0x3327cd4) pushmark .. LISTOP (0x3327cf0) print
    OP (0x3327cd4) pushmark
    SVOP (0x3327d14) const
    LISTOP (0x3327cf0) print
OP (0x3327c58) enter .. COP (0x3327d58) nextstate
    OP (0x3327c58) enter
    COP (0x3327d58) nextstate
OP (0x3327d94) pushmark .. LISTOP (0x3327db0) print
    OP (0x3327d94) pushmark
    SVOP (0x3327dd4) const
    LISTOP (0x3327db0) print
-------
OP (0x3327c58) enter
COP (0x3327d58) nextstate
OP (0x3327d94) pushmark
SVOP (0x3327dd4) const [2] PV (0x15150f8) "Hello World.\n"
LISTOP (0x3327db0) print
COP (0x3327c98) nextstate
OP (0x3327cd4) pushmark
SVOP (0x3327d14) const [3] PV (0x142c078) "Hulo"
LISTOP (0x3327cf0) print
LISTOP (0x3327d34) leave [1]
Hello.pl syntax OK

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In reply to Can you explain what this B::BBlock output means by trisjs

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