procedure StoreToBinFile(const aFileName : string);
Stores the current set of mappings to file.
The name of the file is given by aFileName. The binary file so created can be compiled into a resource that can be read by LoadFromRes.
The only errors than can occur are file I/O errors. Internally StoreToBinFile uses a file stream (TFileStream) and so any exceptions raised will be those raised by this class.