Hi again, 
I´m glad you consider my finding to be at least somewhat interesting. 
You´re welcome
Sorry for that, Paul.
By “dialogue”, did you mean the gnulinux.ch-site I was referring to?
Yes, that´s in German. If you´re using firefox as a browser you could use the TranslateLocally addon, if you´re interested.
see: TranslateLocally as firefox add-on and
TranslateLocally for Firefox – Get this Extension for 🦊 Firefox (en-US)
Among other languages French, English and German are supported.
It either redraws the entire page using the desired language or you can translated specified parts of the page only… 
.
Thanks for your comments. 
@nevj :
Thanks, Neville for trying it out.
That´s great.
I just might add that the firejail part was just for security reasons on my part. Of course running the executable in a terminal would´ve worked without sandboxing as well.
I´ve made it a habit of running untrusted or unknown programmes in the sandbox first, just to be sure. Once I know it´s all right I may skip sandboxing it in the future.
I have to add that firejail ueses the default profile whenever there´s no dedicated profile for a certain programme available.
The default.profile doesn´t really provide a huge amount of security, but it´s better than nothing.
That said you can create your own profile for any application which may improve security dramatically.
Right. It seems that way.
Thanks a lot.
Many greetings to you all.
Rosika 