Distinctive functions of your computer
Fn key
The Fn key function allows you to change operational features
instantly. When you use the following functions, press and hold the
Fn key; then press the appropriate function key (F1 to F12) or other
keys (Insert, Delete, Home, End, PgUp, PgDn and Backspace).
Function
keys
Fn key
12 ThinkPad i Series 1200/1300 User's Reference