Croatian US keyboard (CroUS) keyboard layout for Linux.
This is standard US keyboard layout where you get Croatian characters or layout by pressing AltGR (right Alt) key. In Linux, this keyboard is known as hr-US (in X11) or crous (in console). In short, developers like it.
Keyboard layout for different operating systems:
crous.map is console map. You can usually set it by running:
loadkeys crous
The rest is for X11 or Xorg. If you have decent Xorg release, layout is already included - you don't have to install anything - you can just set it by:
setxkbmap hr us
or by setting up in xorg.conf:
Option "XkbLayout" "hr(us)"
It is collection of different keyboard definitions from different authors.