Work even in stockinette stitch

I started knitting three weeks ago and I’m not use to reading patterns as yet. The pattern says “work even in stockinette stitch” what does work even mean? Thanks in advance.

It means if you’re working in the round to knit every stitch without increase or decrease. If you’re knitting flat it’s knit a row purl a row without increase or decrease.

Thank you Debi. I appreciate your quick response