/// <summary>
/// Entry point for the Marbles grammar.
/// Called by <see cref="Parse"/>.
/// </summary>
void Marbles()
{
QuadrupleManager.AddQuadruple(new Quadruple(Utilities.QuadrupleAction.Goto, -1, -1, -1));
PROGRAM();
QuadrupleManager.AddQuadruple(new Quadruple(Utilities.QuadrupleAction.end, -1, -1, -1));
}