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  1. or download this
    print<DATA>x2 __END__
print<DATA>x2 __END__
  2. or download this
    print<<''x2,"\n"
print<<''x2,"\n"
  3. or download this
    print<< x2,v10
print<< x2,v10
  4. or download this
    print"$_\Q$_\E\"\n"for"print\"\$_\\Q\$_\\E\\\"\\n\"for\""