<p><a href="https://meta.askubuntu.com/q/14237">(Stolen shamelessly from Meta.AskUbuntu.)</a></p>

<p>StackOverflow recently introduced "just in time" <em>tag warnings</em>. These warnings are meant to provide users with just-in-time information to help them avoid common mistakes in the tag they're using (e.g. SQL questions should mention the engine they use).</p>

<p>Here's what they look like:</p>

<p><a href="https://i.stack.imgur.com/AZhJW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AZhJW.png" alt="tag warning"></a></p>

<p>I think CV could benefit from these tag warnings, and I'll self-answer with a proposal for an <a href="https://stats.stackexchange.com/questions/tagged/r" class="post-tag" title="show questions tagged &#39;r&#39;" rel="tag">r</a> tag warning.</p>

<p>Do y'all have other tags and warning proposals? Warnings can include links and basic HTML formatting. Please post below and upvote/downvote.</p>
