public void clearKeys(Class c) {
		if (modelManager.frame == null)
			return;
		Atom[] atoms = modelManager.frame.atoms;
		for (int i = 0; i < modelManager.frame.atomCount; i++) {
			if (SiteAnnotation.class == c)
				atoms[i].annotationKey = false;
			else if (InteractionCenter.class == c)
				atoms[i].interactionKey = false;
		}
		Bond[] bonds = modelManager.frame.bonds;
		for (int i = 0; i < modelManager.frame.bondCount; i++) {
			if (SiteAnnotation.class == c)
				bonds[i].annotationKey = false;
			else if (InteractionCenter.class == c)
				bonds[i].interactionKey = false;
		}
	}