text: r"""
  Laplace equation using the long syntax of keywords.
  
  See the tutorial section :ref:`poisson-example-tutorial` for a detailed
  explanation. See :ref:`diffusion-poisson_short_syntax` for the short syntax
  version.
  
  Find :math:`t` such that:
  
  .. math::
      \int_{\Omega} c \nabla s \cdot \nabla t
      = 0
      \;, \quad \forall s \;.
  """
  from __future__ import absolute_import
  from sfepy import data_dir
  
  filename_mesh = data_dir + '/meshes/3d/cylinder.mesh'
  
  material_2 = {
      'name' : 'coef',
      'values' : {'val' : 1.0},
  }
  
  region_1000 = {
      'name' : 'Omega',
      'select' : 'cells of group 6',
  }
  
  region_03 = {
      'name' : 'Gamma_Left',
      'select' : 'vertices in (x < 0.00001)',
      'kind' : 'facet',
  }
  
  region_4 = {
      'name' : 'Gamma_Right',
      'select' : 'vertices in (x > 0.099999)',
      'kind' : 'facet',
  }
  
  field_1 = {
      'name' : 'temperature',
      'dtype' : 'real',
      'shape' : (1,),
      'region' : 'Omega',
      'approx_order' : 1,
  }
  
  variable_1 = {
      'name' : 't',
      'kind' : 'unknown field',
      'field' : 'temperature',
      'order' : 0, # order in the global vector of unknowns
  }
  
  variable_2 = {
      'name' : 's',
      'kind' : 'test field',
      'field' : 'temperature',
      'dual' : 't',
  }
  
  ebc_1 = {
      'name' : 't1',
      'region' : 'Gamma_Left',
      'dofs' : {'t.0' : 2.0},
  }
  
  ebc_2 = {
      'name' : 't2',
      'region' : 'Gamma_Right',
      'dofs' : {'t.0' : -2.0},
  }
  
  integral_1 = {
      'name' : 'i',
      'order' : 2,
  }
  
  equations = {
      'Temperature' : """dw_laplace.i.Omega( coef.val, s, t ) = 0"""
  }
  
  solver_0 = {
      'name' : 'ls',
      'kind' : 'ls.scipy_direct',
      'method' : 'auto',
  }
  
  solver_1 = {
      'name' : 'newton',
      'kind' : 'nls.newton',
  
      'i_max'      : 1,
      'eps_a'      : 1e-10,
      'eps_r'      : 1.0,
      'macheps'   : 1e-16,
      'lin_red'    : 1e-2, # Linear system error < (eps_a * lin_red).
      'ls_red'     : 0.1,
      'ls_red_warp' : 0.001,
      'ls_on'      : 1.1,
      'ls_min'     : 1e-5,
      'check'     : 0,
      'delta'     : 1e-6,
  }
  
  options = {
      'nls' : 'newton',
      'ls' : 'ls',
  }
  