After 18 years of quilting this is the first time I've heard the term sub-cut. I think someone is just trying to be fancy. :P
By the way, there is NO SUCH THING AS A STUPID QUESTION, only stupid people who don't ask. Since you asked, you are rather smart! I figure it's better to ask and have someone think I'm being foolish than to not ask and waste a lot of fabric and get frustrated. Besides, how do we learn if we don't ask questions??? :wink: