<p><strong>What is the etiquette for editing questions?</strong> How much is it OK to modify? What are the guidelines and what are the limits?</p>
<p>I am concerned that once a question has been edited, the difficulties facing the initial user may not be as conspicuous because the editor may have inadvertently filled in some critical conceptual gaps in the question.</p>
<p>Specifically:</p>
<ol>
<li><p><strong>Data sets</strong> are sometimes presented in different ways including JPEG screenshots. How should they be reformatted, in particular to avoid presuming R familiarity or preference? On this issue I got moderator guidance from @whuber advising to format them as text (usually comma delimited), or else include the data in the answer.</p>
</li>
<li><p>Should <strong>plots</strong> be always left untouched?  Beyond subjective, aesthetic considerations, perhaps some subtle change in the presentation or the data may occur that defeats the purpose of the OP.</p>
</li>
<li><p>Do you all agree that improving the <strong>grammar</strong> to make the question understandable is an OK reason for an edit?</p>
</li>
<li><p>Is reformatting with <span class="math-container">$\LaTeX{}$</span> to beautify equations OK without exceptions?</p>
</li>
</ol>
