Not to myself : how to capitalize an English paper title :
Always capitalize the first and last words of titles of publications regardless of their parts of speech. Capitalize other words within titles, including the short verb forms Is, Are, and Be.
Do not capitalize little words within titles such as a, an, the, but, as, if, and, or, nor, or prepositions, regardless of their length.
The Day of the Jackal
What Color Is Your Parachute?
A Tale of Two Cities
and referenced by Siggraph publications instructions