RouteConverter offline edition Portable

[routeconverter]

Portable for me is that all the files (Application, configuration and data) are in one folder and subfolders.
No use of registry setting and no use off %appdata% folder.
Just put it on a memory stick (Applications and maps) and run it directly on every PC where java is installed.

Well, it's pretty close to that. As an Java application it uses Java Preferences which
are mapped to the Registry on Windows. Could be tweaked to write into files like
described here.

%appdata% is not used.

RouteConverter needs to write temporary files. Currently, this is %TEMP%/routeconverter on Windows

And currently RouteConverter stores maps, routes, elevation and routing data and other downloads in %USERPROFILE%/.routeconverter

Both could be tweaked via Registry entries to point to an arbitrary folder.

So to make RouteConverter portable: how does it know where to put stuff? Command line parameters?