hi
this may be a silly question...
but when a recipe says line a cake tin, does it mean the sides as well??
i can redeem myself from asking a possibly silly question by the fact that i found two recipes for carrot cake and the recipe for a square carrot cake had very precise instructions on how to make sure you line the sides of the tin too. so i was wondering if you do the same with a round tin? i just have with my round carrot cake, and the cake is in the oven, but i can't decide, well, erm, if it looks silly or not. 
and if you don't need to do the sides is there a reason why the square cake tin is any different??