title: Is it possible to create a code block of pseudocode in R Markdown/knitr?
body: <p>I've tried using backticks and tildes, but they require languages. I just want a formatted code block of plain text with highlighted background.</p>
  
  <p>Using <code>eval=FALSE</code> and <code>tidy=FALSE</code> works until reaching a keyword such as <code>if</code>, the subsequent code will be color highlighted in both the <code>.Rmd</code> file and the output PDF. Not specifying a language through the options removes the capability of background highlighting the code in the output.</p>
  
  <pre><code>```{r, eval=FALSE,tidy=FALSE}
  loop through each species
      loop through each measurement of the current species
           if measurement ...
  etc.
  ```
  </code></pre>