Commas

Q. What is a “restrictive” appositive? I have read chapters 5 and 6, but I do not understand the difference between the two types of examples, distinguishing the use of commas by this term. Please advise . . . my client wants to know the “why” behind my editorial source.

Q. Please help clarify a debate over what I see as a groundless but persistent carryover from high-school English classes: the comma-before-too “rule.” The rule goes something like this: When “too” is used in the sense of “also,” use a comma before and after “too” in the middle of a sentence and a comma before “too” at the end of a sentence. I am editing a work of fiction in which the author has rigidly applied the rule. I have just as rigidly deleted the commas. My managing editor believes that a comma is needed when “too” refers to an item in a list and has the sense of “in addition” (e.g., “I like apples and bananas, too.”), but she would omit the comma when “too” refers to the subject of the sentence (e.g., “Oh, you like apples and bananas? I like apples and bananas too.”). My managing editor’s rule helps make a useful distinction, but I am still wondering whether the comma is ever grammatically justified.

Q. If you say “so-and-so is vice president, finance, of such and such,” should there be a comma after “finance”? My boss and I are in disagreement. I think there should be a comma but she says no. I can’t find a specific reference to this anywhere, though.

Q. In our international magazine mailings, we always include the country name; however, we would like to know the correct procedure for including “USA” after the city/state/ZIP. Is there a comma after the ZIP code or not? Your assistance would greatly reduce the amount of tension/dissension among the writers and editor and proofreader.

Q. Can you help me out with a question? Do you use a comma after the abbreviation of the word incorporated? For example, in the sentence “Today, ABC Company, Inc., announced that their earnings have increased 50 percent in the past year,” we have been told to use a comma after the word “Inc.” when used in a sentence. This has caused an uproar within the company because we did not learn this rule. Help!