Using search, I cannot find documents containing '@@@' - they are special in some way and they get interpreted or something happens.
I've imported thousands of notes from my previous note system and '@@@' was my string used in documents for tag inline notes for follow-up or important facts. I cannot re-import notes; the old system is gone. I thought of doing that to change the '@@@' to something searchable. '@@@' was something unlikely to occur in my everyday typing or code fragments.
If the search could be modified to make some way to search for '@@@' - e.g. regular expression '[
