Editing KBC Poker II (section)

===Dual layout support===
The keyboard has four hardware [[layer]]s:

*Normal (non-programmable)
*Fn (with Fn key held; non-programmable)
*Pn (with the Pn key held; programmable)
*Pn+Fn (with both Fn and Pn held; programmable)

The two Pn layers can be accessed by holding Pn, and they can also be activated by using Fn+RShift to engage Pn mode. In this mode, the Pn layers becomes the default, and the Pn key reverts to the non-Pn layers. By default, the Pn layers are configured identically to the non-Pn layers, so engaging Pn mode appears to have no effect until one or more keys are given non-default assignments. This permits a wholly custom layout to be easily configured, without losing access to the default layout. Also, in this mode, Fn selects the programmable Fn+Pn layer, allowing the Fn key to be used for both default and custom bindings, instead of Fn and Pn respectively, with the caveat that Fn+RShift must be pressed each time the keyboard is powered up, and that a "stray" LED will always be lit on the keyboard: Pn mode is indicated by the left LED under the space bar illuminating.