title: get a line break / new line in excel file with r xlsx
body: <p>I want to get a new line in my excel result such as i would get by going into the cell and pressing <kbd>Alt</kbd>+<kbd>Enter</kbd></p>
  <h3>data + code</h3>
  <pre><code>df &lt;- data.frame(a=&quot;Funny\\nNot&quot;,b=&quot;rofl\nlol&quot;,c=&quot;hihi\rh3h3&quot;)
  
  xlsx::write.xlsx(df,file = &quot;df.xlsx&quot;)
  </code></pre>