Well, I have to say that I have never heard of this. I tried to look it up on the web and only found paper piecing and fusible applique.
I do know that there is a technique where you can cut your fabric into squares and you fuse it to a fusible interfacing that has 2" grid on it. Once you fill the grid with your squares, you fuse them and then sew the grid together. I can't remember the name of the book that this came from. It was a popular method about 7 or 8 years ago. Gosh, the author's name is on the tip of my tongue... If I think of it, I send another note.