# To Do List

- GUI

  - Allow you to get the info (position, radius) of a horoball by clicking it.

- Documentation

  - More hyperlinks
  - Expand tutorial
  - Make more screencasts

- snappy

  - Longitude detection in manifolds with a single torus cusp (ie, the slope that dies in homology). Requested by Saul.

- Kernel

  - Merge Jeff’s changes into SnapPy’s copy of the kernel.
  - After this, consider making SnapPy’s copy the canonical one by definition.
  - Improve the situation with uFatalErrors.

- Minor

  - dual_curves should really cache it’s result and have this used by drill
  - One should be able to convert a SymmetryGroup to a Sage permutation group.
  - Also, the SymmetryGroup presentation function should be wrapped. There is code for this in the old SnapPeaPython.

- Ambitious

  - A new basic (sub)class: S3Knot (and/or S3Link).

  - Consider adding a HeegaardSplitting class

  - Consider merging our t3m project and normal surface code into SnapPy.

  - Redo much of Snap in the context of Sage/SnapPy.

    > - Add a method for computing tetrahedron shapes to arbitrary precision.
    > - Add methods for computing invariant trace fields and related number fields.
    > - Add a method which implements and extends Harriet Moser’s algorithm to allow SnapPy to prove that a manifold is hyperbolic.