Happy Holidays!
So I am trying to knit Sincerely Louise’s Tiger Rug, and the instruction is a color chart. This is my first time reading a chart and I don’t understand the highlight section in the picture.
On row 27, the instruction is CO in knit for 3 stitches. I interpret it as casting on 3 new stitches at the beginning of the row. So far so good. However, on row 28, the instruction says that CO in purl for 3 stitches. And I feel utterly lost. From row 27 to row 28, I see three extra stitches. From row 28 to row 29, there are no extra stitches. How should I interpret row 27 and row 28?
And what exactly are CO in knit and CO in purl? I use the first cast-on stitch method mentioned in this lovely video by Maryna, which is simply adding a new stitch onto the row.
Three Ways to Cast On Stitches at the Beginning of a Row - YouTube
Is there any difference between CO in knit and CO in purl?
Thank you so much.



And you need to enlarge the picture to see the whole thing.