An independent clause is a sentence. Words that introduce independent clauses are and, but, for, or, nor, so, and yet. These words are also called coordinating conjunctions. When the second independent clause in a sentence begins with a coordinating conjunction, use a comma before the coordinating conjunction.
Tip:
An independent clause has a subject and a verb and expresses a complete thought.
Examples
The web-based tools are optional, but you must enable the WebCast feature on a WebCast host computer.
The system starts the installation program for the audio bridge, and the software installation begins.
Press the Tab key, and then type an access number.
