that darned curling problem solved

I have learned from a dear friend that stockingette stitch curls more than other stitches, and she taught me how to remedy this problem. Here is what she said:

Tip: Stockinette stitch is notorious for curling. To prevent curled
scarves begin with ten rows of seed stitch, [this is for worsted weight
or finer yarn, less rows for huge stuff]. Then begin and end your scarf
with margins of seed stitch thus:

Beginning of each row: Slip one, purlwise, [k1,p1]3 times, add a yarn
slip stitch marker, then continue your scarf in the stitch of your
choice.

End of each row: Set yarn marker seven stitches from end of row.[p1,k1]
3 times, k1. [this means you do 2 k at the end, the second one becomes
the slipped stitch for the next row beginning.

End scarf with as many rows of seed stitch as you did at the beginning.

I am sure this will make more sense as I learn more. I understand what she is saying, but I have yet to execute it.