Hi,

two brief question about the nonlinear solver interface,

solve(F == 0, u)

 * How to specify an intial guess? Is the value used that's found in u?
 * In the output,

      Newton iteration 1: r (abs) = 3.402e-01 (tol = 1.000e-10) r (rel) =
1.040e+00 (tol = 1.000e-09)

    is it correct that r(rel) = F(x)/F(x0)?

--Nico
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