The application behaves in portable way if
* portable.txt file exists in the application folder OR
* if there is an AppData subfolder in the application folder.

To cancel portable mode, delete the the AppData folder AND rename portable.txt
file to something else (for example _portable.txt).

In portable mode, all information is stored in the AppData folder.

Droplets may not work in portable mode, because they need to know
the location of the application in order to operate. Running the application
at least once after moving it may fix the problem.