Or close just mean what Webster described.

: being near in time, space, effect, or degree <at closerange> <close to my birthday> <close to the speed of sound>

Close, a very imprecise adjective IMHO and likely used for just that reason, so as not to be tied down too much. As the old saying goes "close only counts in horsehoes and hand grenades". Since we are playing neither, my take is that close means next to nothing.

Patience required to make money on ZEN.