Pullover 63

Hi could anyone help me with this diagram

Thanks in advance.

What do you need to know? There should be a legend with symbol meanings if that’s a problem.

You mean definition for every symbol. I had but the one in the middle I don’t. When I work the stitch it does not look like the picture of the pullover.

I think it means a central double decrease (CDD) because of the decreases on this sides and the ridge showing in the photo. It looks similar enough IMO to the one for S2KP2 on RS, SSPP2 on WS on this chart.