If conj. : In case that; granting, allowing, or supposing that; -- introducing a condition or supposition.

If conj. : Whether; -- in dependent questions.

Example:
If..............................................................................?

Taxonomy
school, Lindsay Anderson, boys, Whips, Anderson, Mick, Rowntree, 1969, 1968, black and white, sequences, The Headmaster, colour, David Sherwin, room scenes, free encyclopedia, screenplay, Philip Bagenal.

Defination from the web: