I

i.e., e.g.

Follow each with a comma and do not italicize. E.g. stands for exempli gratia, Latin for for example. I.e., id est, means that is, namely, or in other words.

Inc., Ltd.

Do not place a comma before or after Inc. or Ltd. unless specified by the company.

Gladco Inc. has gone under.

Initials in names

Use periods and spaces between initial letters of someone’s name.

W. C. Williams

Interdepartmental addresses

Order of room numbers, building names
For consistency in listing office numbers and addresses, room numbers go before the building name.

408 Hampton House

The Wolfe Street Building
For interdepartmental addresses, our Wolfe Street building will no longer be designated Hygiene; it will now be known as Wolfe St. Bldg.

International Honorary Committee, the School's

The name of the School's Honorary Committee has been officially changed to the International Honorary Committee.

Internet

The word Internet is always capitalized.

See also URLs (Internet addresses)

Inuit

In some cases, it's acceptable to use the term Inuit to refer to culturally similar indigenous peoples of Arctic regions including Alaska, Canada, Greenland, Russia and even Denmark. When used generically in this way, the term may include 

Alaska's Inupiat
Alaska's Yup'ik
Canada's Inuit
Canada's Inuvialuit
Greenland's Kalaallit
Russia's Siberian Yupik

This is a thorny issue. While some people accept the label Inuit, others do not. For example, even though some councils consisting of Yupik allow themselves to 
be labeled as Inuit, the Yupik language is, technically, distinct from Inuit.

Our policy is to exercise a great deal of cultural sensitivity when referring to aboriginal peoples of the Arctic region, and it may be appropriate to refer to, for example, Alaska Natives, Canada Natives, indigenous peoples of Alaska, and so on.

- Use the term preferred by the subjects of the article or reference.
- Be as specific as possible. (E.g., "Historically, the Inuit of Alaska had sexually open marriages.")
- Never, ever use the term Eskimo.

See also Alaska.

Italics

Italics versus quotation marks
Italicize titles of books, newspapers, magazines, scientific journals, TV series, record albums, movies, plays, works of art, very long poems, operas and other long musical works, ships, aircraft, spacecraft, satellites. The names of poems, articles, and book chapters are set off by quotation marks.

Words used as words
Italicize words used as words.

The term ozone refers to an atmospheric gas.

Non-English words
If a non-English word is unfamiliar to the intended audience, then set it in italics; otherwise use roman type.

Math is his bête noir.
BUT: She's a real bête de somme.