1. 1. Specifying the problem
2. 1. 1.1. ODE equations
   2. 1.2. Mass matrix
   3. 1.3. Root finding
   4. 1.4. Forward Sensitivity
   5. 1.5. Custom Problem Structs
   6. 1. 1.5.1. Non-linear functions
      2. 1.5.2. Constant functions
      3. 1.5.3. Linear functions
      4. 1.5.4. Putting it all together
   7. 1.6. DiffSL
   8. 1.7. Sparse problems
3. 2. Choosing a solver
4. 3. Initialisation
5. 4. Solving the problem
6. 5. Benchmarks