Ravelry: Crown Jewels Afghan Square pattern by Melinda Miller
this pattern is a free ravelry download

If you go to the pattern then look at the special stitches - the one that says 'close double treble cluster' - how do they get 7 loops on the hook?

I don't know if I'm going to crochet the square or not but I would like to know how to do the stitch. I googled 'close double treble cluster' but just saw a video on how to do a double treble cluster and a video on 2 double trebles together. I didn't find an answer to my question above.