[janvanmaar]

I have mapped the central European characters instead of the default Russian ones and it works very well! Thanks!
While it is very useful already, I was wondering whether it could be possible to induce the special characters by pressing a combination of keys rather than by entering a new layout mode. For example, AA+Q could write the character that is currently written by Q in the new layout mode, AA+q could write the character that is currently written by q in the new layout mode etc.
The reason for this is that while switching a layout completely is certainly preferable for different alphabets, one usually needs to mix the ASCII latin characters with special characters derived from latin in majority of other European languages - which requires permanently switching the layout there and back with the current implementation...