title: vi backspace printing ^? in insert mode
body: <p>I use vi and when I am in an insert mode, it will print <code>^?</code> instead of actually deleting the text. </p>
  
  <p>I referred to this <a href="https://stackoverflow.com/questions/9701366/vim-backspace-leaves">vim backspace leaves ^?</a> but it does not solve my problem.</p>
  
  <p>I created the .vimrc file in /u/myname dir.<br>
  Does .vimrc needs to be in a certain location?</p>
  
  <p>In .vimrc, I have </p>
  
  <pre><code>set backspace=2
  set backspace=indent,eol,start
  </code></pre>
  
  <p>What needs to be in .vimrc file?</p>