For OS X users you can do the following to have F-Keys function as standard:
1) Set function keys to work as normal by going to:
System Preferences > Keyboard > and check the box in front of “Use all F1, F2, etc. keys as standard function keys”
2) Remove “F-Key” shortcuts from Mission Control by going to:
System Preferences > Mission Control and remove shortcut keys under section “Keyboard and Mouse Shortcuts”