Degree asked for:
75.6% of postings never mention school. Those stay in your results unless you say
otherwise at the bottom of this rail.
Visa sponsorship:
96.8% of postings never raise the subject. Sponsorship is the sparsest field in the
corpus, so the first box is a narrow gate and the second is a wide one.
That count is what this box removes, not what it returns — the only one on the
page that reads the other way, because it is the only control that only ever subtracts.