Type in the name of the source file in the Source text box. To browse for a source file,
click the Browse button to the right of the Source box.
The same goes for choosing the output file name. You can overwrite existing files,
so be careful!
Once you are ready, click the Begin button and your map will be converted.
Remember, this is for converting FULL STW MAPS to EDITABLE DEMO MAPS, so there is no
point trying to convert edited maps like Tami Kochi, Magyorsag or even flatdemo,
because these are already in demo format.