Welcome to the forum,

"Fuel dots" are plugs, mounted in the cowl or fuselage, through which you can easily fuel your tank. Examples can be seen in pictures at http://www.centralhobbies.com and other places.

Were you aware you can search for such items, and not have to wait for one of us for answers? There is a search function on the RC Universe front page, and there are search "engines" on the Web, like www.google.com for instance. You just type in the words, click "search" and a lot of information pops up.

Good luck,
Dave Olson