title: R Studio toggle for diagnostics
body: <p>I assume the R Studio <a href="https://support.rstudio.com/hc/en-us/articles/205753617-Code-Diagnostics" rel="nofollow noreferrer">toggles for diagnostics</a> are these, found at:</p>
  
  <pre><code>Tools &gt; Global Options &gt; Code &gt; Diagnostics
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/aH3VA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/aH3VA.png" alt="enter image description here"></a></p>
  
  <p>I have everything selected identical to the image above. If I recall properly my R Studio used to underline misspellings (red squiggly maybe) and it would put exclamation marks and warning signs when my syntax was off in the margins. For some reason this has stopped lately. I'm on R Studio Preview version 1.2.1237.</p>
  
  <p>How do I toggle these diagnostics (misspellings, syntax errors, etc.) back on?</p>