What is the meaning of Share class?

Some stocks and certain mutual funds subdivide their shares into classes or groups to designate their special characteristics. For example, the differences between Class A shares and Class B shares of stock may focus on voting rights, resale rights, or other provisions that limit the power of certain shareholders. In some overseas countries, Class A shares can be purchased by citizens only, while Class B shares can be purchased by noncitizens only. In the case of mutual funds, class designations indicate the way that sales charges, or loads, are levied. Class A shares have front-end loads, Class B shares have back-end loads, also called contingent deferred sales charges, and Class C shares have level loads.