Sphinx - what is the cutoff parameter in the SetLimits function for?

Question

Sphinx

What is the cutoff parameter for? I've read a lot and still don't understand.
What's the difference between and Still, the last 5 records will be returned. Where I searched - php.net/manual/ru/sphinxclient.setlimits.php sphinxsearch.com/wiki/doku.php?id=php_api_docs sphinxsearch.com/docs/current/api-func-setlimits.html and forums
$cl->SetLimits(55, 25, 60);
$cl->SetLimits(0, 25, 60, 5);

Answer 1

sphinxsearch.com/forum/view.html?id=5683
check live
maybe a glitch, or maybe the algorithm is like this , of
course, it's not obvious why exactly the last 10 are returned when cutoff