Some reference has been made in Chapter III to the ancient religious and charitable corporations from which the idea of a distinct existence for the corporation, apart from the people who organize and manage it, was derived and applied to business corporations. In modern times this class of religious and charitable corporations has been broadened to include all corporations not organized for profit. They are often spoken of as "non-stock" corporations. This term now includes municipal and other chartered governments and societies, as well as religious and charitable corporations. For the most part these non-stock corporations are not concerned directly with business enterprises, and we need give them no further consideration. There are a few exceptional cases of corporations chartered in this form for business purposes, such as stock and produce exchanges and business associations of various types.