\\f is said to be the form feed. \\t is a tab, \\a is a beep, \\n is a newline. What exactly is a form feed - \\f>
\\f
\\t
\\a
\\n
\\f>
If you were programming for a 1980s-style printer, it would eject the paper and start a new page. You are virtually certain to never need it.
http://en.wikipedia.org/wiki/Form_feed