I am new to knitting and need help with ribbing instructions

Can anyone help me understand this instruction from the pattern I am trying to knit:

Next row. Rib 7, (m1, rib 1) 18 times, m1, rib 8. 52 sts.

I dont understand what it wants me to do when it says ‘Rib 7’, or ‘rib 8’. I understand standard ribbing to be k2 then p2 and repeating this for the entire row.

Thanks to anyone that can help.
Brit[/b]

Standard ribbing IS k2p2 all the way across. It looks like you now have to do an increase row.

They want you to work the first 7 stitches in the ribbing you’ve been doing as
a 2,2,2, then the first stitch of the next rib, whether knit or purl, then do a M1 increase, and do the other rib stitch. You have to (m1, rib stitch) 18 times, so do a m1 increase, and knit or purl whatever the other stitch has been all along in the rib pattern. When you get to the end, work the last 8 stitches in the ribbing as established.