The comma is a versatile punctuation mark that is used in many situations, including breaks within sentences to supplement information about the subject. For example, a comma can be used to separate "Bill Gates" from "CEO of Microsoft" in the sentence identifying him as the developer of the Windows operating system.

1. http://www.skillsyouneed.com

6. Use a comma to indicate a break or pause within a sentence.The comma
( , ) is a very versatile punctuation mark.There are dozens of situations
that might require the use of a comma. One frequent case is a break
within a sentence that supplements and adds information to the subject.
Example:
Bill Gates, CEO of Microsoft, is the developer of the operating system know
asWindows.

11. How many did you find?
There are 6 – most people only see 3 the first time they read it!

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