I can't find out how to turn it on... |-(

Apparently the Windows version is "u".

See here: http://www.vendetta-online.com/x/msgboard/3/30124#361226

It's called "sensor log" in the PDA directly under the "navigation" button.

Thanks 😊 I'll try that 😉

You can also do /toplist in chat or assign that to one of your macro keys.