// Program objects is necessary, but when I tried using the same
// one, I got ClassCastExceptions when I tried to open the
// Capacitance model - ST 12/5/07
workspace.world.program(workspace.world.newProgram());
workspace.world.rememberOldProgram();
Program program = workspace.world.newProgram();
workspace.world.program(program);
workspace.world.turtleBreedShapes.setUpBreedShapes(true, program.breeds()); // true = clear old
workspace.world.linkBreedShapes.setUpBreedShapes(true, program.linkBreeds()); // true = clear old
}