HydroGeoSphere/Simulation Control Options

1. General
   1. Finite-Difference Options
   2. Matrix Solver
2. Timestep Control
   1. Adaptive Timesteps
3. Saturated Flow
4. Variably-Saturated Flow
   1. Newton Iteration Parameters
5. Discrete Fracture Flow
6. Surface Flow
7. Transport
8. Density-Dependent Flow and Transport Solution
   1. Relative Concentration as Primary Variable
   2. Absolute Concentration and Temperature as Primary Variables
   3. Salt Mass Fraction as Primary Variable
9. Heat Transfer
10. Inactive Elements