Having more keys with additional functions necessitates a larger keyboard, but if you don't need all the bells and whistles, you can cut things down to size by a surprising amount.

I did find a keyboard with 22 function keys, but it was for Arabic, and couldn't be modified to accept Cherry Red keys.

The Function Elite MiniTKL supports all the latest features that the gaming keyboard community is raving about, including Rapid Trigger, Snap Overrides, and Dual Actions.

Press Release Scientist uses form to explain function of key building blocks of life by SpaceRef October 2, 2005 ...

The NZXT Function Elite MiniTKL keyboard is a great solution to those looking for a premium compact gaming keyboard that doesn’t skimp on performance and features.

The NZXT Function 2 is a competitively priced, quiet, and fully capable full-size optical gaming keyboard with dual actuation and hot-swappable functionality that has a couple of design quirks. PC ...

After experiencing the NZXT Function Elite MiniTKL Keyboard, I won't use traditional mechanical or optical switches ever again.