How do I write “all-in-one” correctly?

Question

How do I write "all-in-one"? Should it have capital letters? Should it have hyphens?

I have done some googling, but I have not found a consistent result.

F'x · Accepted Answer · 2011-02-23 09:50:59Z

up vote 2 down vote accepted

It takes hyphens:

all-in-one: adjective [ attrib. ]

combining two or more items or functions in a single unit: an all-in-one shampoo/conditioner.

(from the New Oxford American Dictionary)

No capitalization is required, unless it's at the beginning of a sentence, of course.

edited Feb 23 '11 at 9:50

answered Feb 23 '11 at 9:32

F'x
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Source? Cite references! – Benubird Feb 23 '11 at 9:47

1 Answer