As the name implies, only one row of the same pattern is repeated to make this scarf.
After casting on a number of stitches dividable by 4, it is slip one purlwise, knit in back loop, purl, knit, [knit, knit in back loop, purl, knit] repeat in brackets until the end.
That is it. I also like that it is reversible. I will likely give this scarf away and donate it back to my church, since I got the yarn free from my church.