Talk:Expedition/Reference tables/@comment-125.160.212.68-20150310093558/@comment-26117481-20150311075830

If you take a look at Legends -> Requirements, it will say that you can hover your mouse over the asterisk (*) in order to see more information. (Its written in the 4th line down)

Hovering over the CV* will say "CVL and AV can be substituted in". Basically it's just an extra tip for those who don't have a high number of CVs or those that want to reduce expedition costs.