Specify the Control Variable Field specific to the geometric entity level (domain, edge, boundary, or point) in question.

Enter a Control variable name and Initial value.

This section contains settings for the element used to discretize the control variable. Select a Shape function type: Lagrange (the default) or Discontinuous Lagrange. Also select an Element order: Linear, Quadratic (the default), Cubic, Quartic, or Quintic. The value type (complex or real) for all the variables defined by this Global Equations node is selected in the Value type when using splitting of complex variables selection. The default value type is Complex.