This package contains several functions for working with integral indefinite forms:

• It can test if two indefinite forms are equivalent under the action of the general linear groups over the integers. And if they are equivalent, it can provide a matrix realizing the equivalence.
• It can provide a finite generating set of the automorphism group of a given indefinite form.
• Given an integer C and an indefinite form A, it can find orbit representatives of the solutions of the equation A[v] = C. If C = 0 then orbit representatives of primitive isotropic vectors are provided.
• For an indefinite quadratic form having a signature (p,q) and k <= min(p,q) we can find orbit representative of k-dimensional subspace if isotropic vectors.
• For an indefinite quadratic form having a signature (p,q) and k <= min(p,q) we can find orbit representative of flags of length k.