Custom Words - Pronunciation table

Synesthesiam once wrote

and I can remember this table. But I can’t find it anymore.
Anyone an idea, where it has gone?

Go to your Rhasspy UI and click the words icon on the left (the quotes icon) OR append /words to the URL {IP}:{PORT}/words. There’s a sentence with a link “its phonetic pronounciation” and “you should check to be sure”, depending on if you have uncomfirmed words. Click one of those links for phonemes.

Don’t now, what to say. I clicked those links before asking the question. Nothing happened.
Tried again and … voilá …