thunbnail image

hi there,

i’m a bit confused…there’s 3 pictures about a product:

the very small one,that you find first.After clicking in the product,you have a second picture a little bigger inside the product description itself.And then,you have the third one,that you have when you “click to enlarge”.

Wich one is considered the thunbnail the first or second?Also i don’t know if the detailed image is the second or the third image?:confused:

i got it.the thunb created in the category page is automatically created when updating from a csv file