RouteConverter offline edition Portable

[routeconverter]

The easiest way to create a portable application is to use "relative path" from the starting folder path of the application.
If your application is started from a folder, example "e:\RouteconverterPortable" you can put all data (Maps and configuration files  in the folder "e:\RouterconverterPortable\Maps") To access this folder you can use as folder variable ".\Maps" atc..

How do portable apps do this typically? Via a command line switch? Something like

RouteConverter.exe -portableFolder ./RouteConverterPortable

which configures the internal structures (see my post above) to put everything below "./RouteConverterPortable"

I'm already creating 9 different versions of RouteConverter and I don't want to add 2 more to it
for Windows Online/Offline Portable. Thus I'm thinking of command line switches.