Page 484
Comma . . .
484.1 To Enclose Information
Commas are used to enclose a title or initials and names that follow a person’s last name.
On our tour of the Medical College of Wisconsin, we met President John R. Raymond, Sr., M.D., as well as Dean of Graduate Studies Ravi Misra, Ph.D., and Chief Operating Officer Matthew Lester, M.B.A., M.H.A., C.P.A.
484.2 Between Two Independent Clauses
A comma is used between two independent clauses that are joined by coordinating conjunctions (and, but, or, nor, for, so, and yet).
Some businesses sell their products exclusively online, so it’s possible to start a retail business without a physical store.