Hey there,
thank you very much for your quick answer!
And that’s the problem, I do follow these instructions and use these pairs only once (see abstract below), but like you can see on the page https://www.tu-to.org, it doesn’t work at all, unfortunately.
{:de}text1_de <!–more–>
text2_de{:}{:en}text1_en<!–more–>
text2_en{:}
