title: Insert the carriage return character in vim
body: <p>I'm editing a network protocol frame stored a file in Unix (<code>\n</code> newlines). I need to insert the carriage return character (<code>U+000D</code> aka <code>\r</code>). When I try to paste it from the clipboard (<code>"+p</code>) or type it using <kbd>Ctrl</kbd>+<kbd>Shift</kbd>+<kbd>u</kbd>-<code>000d</code>, the linefeed is inserted (<code>U+000A</code>).</p>
  
  <p>What is the right way to do it?</p>