The name of the file must be in the following format: keyboardmapping_<language>_<COUNTRY>.properties e.g. for US English: keyboardmapping_en_US.properties
See the section in this document 10 for language codes.
In the file, enter the codes for all characters which require you to press a modifier key.
The format for these codes is: <Character>=<Modifier>+<Character without modifier> e.g. for the @ character: @=shift+2
The following symbols must be escaped with a backslash: ! = : \ , e.g. \!=shift+1 for !
There are pictures of various keyboards on the following website: http://www.uni-regensburg.de/EDV/Misc/KeyBoards/
The mapping files have to be checked into the Server project in the resources folder.
You also have to put this mapping file into the RCP-Accessor plug-in of your AUT :