For a lot of sailors, especially those new to catamaran sailing, knowing how to position the sails and the traveler in different wind conditions is a major issue. The other question of when to reef, which sail to reef based on wind speeds and direction comes up a lot, too. I find these pictures have helped me along the way. They are a good resource to have on hand. I can sit here and try to explain things, but I believe pictures are worth more than a thousand words.