title: Open R Markdown in viewer pane
body: <p>I'm rendering an R Markdown with parameters with the rmarkdown package' render function.</p>
  <pre><code>rmarkdown::render(&quot;file.Rmd&quot;, params = &quot;ask&quot;)
  </code></pre>
  <p>It opens my default browser (Chrome) asking for the parameter input. I want it to open not in my default browser, but in the viewer pane. Or, alternatively in a different browser, like IE.</p>