Product Analytics

Unique Pageviews - Entrances

What mean unique pageviews and what means entrances? Pageviews means that so many people open my product page , and entrances means that they click “live preview” ?

Anyone know the answer?

As far as I know as unique it counts the visits from different IPs. Entrances are visits by external links: google, youtube etc, and also from other Envato marketplaces.