Yeah, it's basically just saying to knit without decreasing for one row after a decrease row. The next row after that can again be a decrease... then a non-decrease. This stems from... flat knit patterns will have you decrease on the knit side, which is the right side. So, with a flat knit pattern, you would knit and decrease on the knit row, then purl it without decreasing, then back to a knit and decreases. This also allows a more gradual look to your decreases, so that it won't look like a sharp-sided cone when you're done.