Rather than me retyping the info, this post should help to explain it: http://www.t-shirtforums.com/general-t-shirt-selling-discussion/t37985.html
And this one: http://www.t-shirtforums.com/general-t-shirt-selling-discussion/t48532.html
Once you read through those two threads, you'll have a better understanding.
Another member may be able to add more to this thread that helps to clarify the differences as well.
And this one: http://www.t-shirtforums.com/general-t-shirt-selling-discussion/t48532.html
Once you read through those two threads, you'll have a better understanding.
Another member may be able to add more to this thread that helps to clarify the differences as well.