This is a non-traditional X keyboard layout for cz/sk/de keymaps - besides of the classic layouts, it also enables an enhanced layout where by default you have all the classic us layout keys available, but you can still type national characters using a 3rd-level shift (capslock recommended by UCW; e.g. capslock+a == �). This means that you can actually code as you are used with this layout, and still write with diacritics when necessary without changing it.

This is KAM MFF CUNI fork by Petr Baudis of SUSE fork by Milan Vancura of original (pre-xorg) version by Daniel Skarda.