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+
+exports.name        = 'W3C Guideline 3';
+exports.description = '';
+exports.rule        = function(report) {
+
+  /* Checkpoint 3.1 [Priority 2] **********************************************/
+
+  // TODO: this seems pretty subjective, as you have to be able to understand
+  // the intent of the content.  The math example is tough, as you'd have to be
+  // able to pick out a situation where text wasn't marked up, but was also
+  // mathematical notation.
+
+
+  /* Checkpoint 3.2 [Priority 2] **********************************************/
+
+  // require that the document contains a dtd.
+  // TODO: how should we apply this check to iframes and such?
+  if(!document.doctype) {
+    report.error('No doctype given for the document', null);
+  }
+
+
+  /* Checkpoint 3.3 [Priority 2] **********************************************/
+
+  // use style sheets instead of HTML attributes to specify formatting
+  // information.
+  $5('b').each(function() {
+    report.error('The b tag shouldn\'t be used, use strong instead', this);
+  });
+
+  $5('i').each(function() {
+    report.error('The i tag shouldn\'t be used, use em', this);
+  });
+
+  $5('[font]').each(function() {
+    report.error('Use css instead of the font attribute for formatting', this);
+  });
+
+  // TODO: there are other cases to handle here, not sure about the best path
+  // forward.
+
+
+  /* Checkpoint 3.4 [Priority 2] **********************************************/
+
+  // TODO: not sure what the best way to select everything that's not
+  // automatically positioned.  Additionally, many fancy user interfaces will
+  // use pixels when positioning content, which isn't necessarily wrong.
+
+
+  /* Checkpoint 3.5 [Priority 2] **********************************************/
+
+  // TODO: what's the best way to select siblings that match a given pattern in
+  // jquery?  Essentially, we just want to match situations where h1 is followed
+  // by something that's both a header, and not h2 (for example).
+
+
+  /* Checkpoint 3.6 [Priority 2] **********************************************/
+
+
+  /* Checkpoint 3.7 [Priority 2] **********************************************/
+
+  // TODO: is there any way that we can detect quotations that aren't inside of
+  // a blockquote region?
+
+
+};