I fully agree. The choice of words tripped me up. (Although, I was only “search-skimming” the manual, not going through the whole chapter. So, if I had read the whole chapter I might have understood better what’s meant with “term”…)
Sorry, I don’t get this (though I want to understand it). – The logical expression NOT (tag is GAP) should find any document which does not have a tag equalling GAP, shouldn’t it?