title: What really is \0A\00 in llvm string
body: <p>I'm just a beginner on llvm assembly and I like to ask question about
  everything I'm uncertain about.</p>
  
  <p>I was just looking at the hello world program
  and @str = internal constant [13 x i8] c"hello world\0A\00"</p>
  
  <p>I don't understand what the suffix means
  \0A\00 I tried getting read of it and it ended up not having a newline at the output
  however if I just have \0A the newline comes back... I feel like \00 is useless...
  is it true? </p>