One question...

Theme: General use / display / view

I would like to use TARGET alternately German and English. Where can I toggle this?
You have to install TARGET twice. After the first installation - e.g. English - you have to rename the EXE, e.g. add a "_en" to the name before the ".exe". If you then reinstall German, this existing EXE will not be overwritten. On the desktop, you then manually create an additional desktop icon for the first EXE.

So the EXEs are different. Therefore it is not possible to
toggle the language while working. In the installer all 3 EXEs are contained. The respective EXE can be found here:

C:/Program Files (x86)/IBF/TarVxx//TarVxx.exe

Please note that the keyboard shortcuts differ in the different languages.