they're telling you to knit this section or number of sts onto a piece of yarn that is scrap.....it is just another type of 'stitch holder'...machine knitting uses a lot of scrap or waste yarn but hand knitters can use too...the trick is to knit at least 5 or 6 rows of this waste so that it will not come unraveled accidently.....when you get further down in the pattern, it will tell you to go back to this area and 'pick up' those sts...you will just unravel carefully and then place the live sts back on your ndls and follow pattern from there....good luck...you have just added a new technique to your knitting arsenal....good luck