<p>I don't know of any official CV policy.  My policy, however, is to leave a comment for the OP stating that the question is unclear, typically with some description of the points that need clarifying, and also mention that questions about software are generally off topic here.  I then vote to close as <em>unclear</em>.  </p>

<p>If the OP edits the question and clarifies it, but it really is just about software, I do not vote to reopen (I may flag for migration to SO, though).  I suppose you could say that the edit had been 'wasted' but that's ambiguous to me.  On the other hand, the edit may clarify that the question wasn't really about software, or the edit may change the nature of the question to a statistical question.  In that case, I vote to reopen.  </p>
