Should I refer to a tutorial as a how-to or a how to? Is there a grammatical rule for this?
closed as general reference by Marthaª, kiamlaluno, Mehper C. Palavuzlar, FumbleFingers, simchona♦ Dec 16 '11 at 5:42
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That is how it is to be written, as you mean a certain thing (the way) defined by the phrase. Without a hyphen it would not refer to the specific thing but just be a phrase.
There is a distinct difference.