zation</b> (<tt>tn</tt>) <a href="D_tn_docs.html">Method details</a></p><pre>CGSolver                Matlab conjugate gradient (CG) method used to
                        solve for search direction {'symmlq'}
  'symmlq'              Symmetric LQ method
  'pcg'                 Classical CG method</pre><pre>CGIters                 Maximum number of CG iterations allowed {5}</pre><pre>CGTolType               CG stopping tolerance type used {'quadratic'}
  'quadratic'           ||R|| / ||G|| &lt;  min(0.5,||G||