          example, PetscOptionsGetInt() and PetscLogBegin().
        </li>

        <li>
          The calling sequence for PetscMalloc() was changed to return and error
          code and deliver the pointer as a new final argument. Due to this
          change, the macros CHKPTRA() and CHKPTRQ() were dropped.
        </li>
      </ul>

      <h4>AO (Application Orderings):</h4>
      <h4>TS (Timestepping Solvers):</h4>
      <h4>SNES (Nonlinear Solvers):</h4>
      <h4>SLES (Linear Solvers):</h4>
      <h