Here are the files used by Tracer. They are located in the main Tracer directory.
The configuration file : Tracer.cfg
This file contains various datas such as Tracer's window position, state, user-defined values.
The LANG value is used to select the language file. Use the 2 letters country code present in the filename of the language file.
The language files : Tracer_locFR.txt - Tracer_locEN.txt ...
These files contains all the text datas needed user by Tracer. You can edit these files in a text editor or create new ones for other languages. The file used is defined in the config file.