Colon

Colon is one of the punctuations mostly used when the author wants to inform the reader that what comes next is directly related to the previous sentence. That is why colon is also called “the mark of expectation or addition”.

The most important thing to remember is that colons are only required after a complete sentence. For instance it is correct to say the first scene of the movie Godfather has two settings: the interior of Don Vito Corleone’s office and Connie Corleonie’s weeding reception outside of the house or in the movie Godfather by Francis Ford Cappola, director portrays characters through the usage of the following: costume, and color. Colon is appropriate in these sentences since, my statements are complete sentences. Most of the time if we can replace the colon with the word namely, then the colon is the right choice.

Another thing to remember while using colon is that only use one space after the colon. Capitalization is not necessary after the colon. Therefore, it is a style choice and it depends on the write.

For more information go the following link: http://grammar.quickanddirtytips.com/colon-grammar.aspx