SEMICOLON

    A semicolon  is a mark of punctuation used to connect independent clauses and indicating a closer relationship between the clause than a period does. 

Rules in using a semicolon: 

Rule 1.	Use a semicolon in place of a period to separate two sentences where the conjunction has been left out.
	Examples:	Call me tomorrow; I will give you my answer then.
		I have paid my dues; therefore, I expect all the privileges listed in the contract.

Rule 2.	It is preferable to use a semicolon before introductory words such asnamely, however, therefore, that is, i.e., for example, e.g., or for instancewhen they introduce a complete sentence. It is also preferable to use a comma after the introductory word.
	Examples:	You will want to bring many backpacking items; for example, sleeping bags, pans, and warm clothing will make the trip better.
		As we discussed, you will bring two items; i.e., a sleeping bag and a tent are not optional.

Rule 3.	Use either a semicolon or a comma before introductory words such asnamely, however, therefore, that is, i.e., for example, e.g., or for instancewhen they introduce a list following a complete sentence. Use a comma after the introductory word.
	Examples:	You will want to bring many backpacking items; for example, sleeping bags, pans, and warm clothing.
		You will want to bring many backpacking items, for example, sleeping bags, pans, and warm clothing.

Rule 4.	Use the semicolon to separate units of a series when one or more of the units contain commas.
	Example:	This conference has people who have come from Boise, Idaho; Los Angeles, California; and Nashville, Tennessee.

Rule 5.	Use the semicolon between two sentences joined by a coordinating conjunction when one or more commas appear in the first sentence.
	Examples:	When I finish here, I will be glad to help you; and that is a promise I will keep.
		If she can, she will attempt that feat; and if her husband is able, he will be there to see her.