: &nabla;</li>
  <li>Writing <code>\ang</code>, results in: &ang;</li>
  <li>Writing <code>\angle</code>, results in: &ang;</li>
  <li>Writing <code>\perp</code>, results in: &perp;</li>
  <li>Writing <code>\sdot</code>, results in: &sdot;</li>
  <li>Writing <code>\cdot</code>, results in: &sdot;</li>
  <li>Writing <code>\lceil</code>, results in: &lceil;</li>
  <li>Writing <code>\rceil</code>, results in: &rceil;</li>
  <li>Writing <code>\lfloor</code>, results in: &lfloor;</li>
  <li>Writing <code>\rfloor