title: what's the best way to hardcode a multiple-line string?
body: <p>In unit test I would like to hard code a block of lines as a string.</p>
  
  <p>In C# I would do</p>
  
  <pre><code>var sb = new StringBuilder();
  sb.AppendLine("myline1");
  sb.AppendLine("myline2");
  sb.AppendLine("myline3");
  </code></pre>
  
  <p>Since I converted to F# I tried to minimize the usage of .Net method by using <code>bprintf</code> instead, but somehow there is no <code>bprintfn</code> support which seems strange to me.</p>
  
  <p>It is tedious to add <code>\r\n</code> at the end of each line manually.</p>
  
  <p>Or is there any better way than <code>StringBuilder</code>?</p>