Hi WhiteNoise, thank you for your answer!
First I always search in the postings before I ask a question because I do not want to spoil your and the others time. But shall I read all the post on ‘search’ before I post a question? I want to use Obsidian for my work and not work on Obsidian. Ok, you have to make yourselfe familiar with the tool now question, but the priorities are different.
Second I did not want to search a ‘file’. I only added the screenshot with the file window in order to show you that there is a correspondance to the seach phrase I was looking for. Sorry to mislead you - I wanted to avoid the question wheather there is a file or not.
Anyway, thank your for your effort and answer!