I've worked out most of it, but there are these 4 cords and pegs left over.
I think they are supposed to be used for windy weather to add support ?
Do they run through the nylon loops ( can't see where else they go ) ?
Do they splay out in all directions (like an A-frame tent) , or do you set them up opposite to the prevailing wind ?

Glad to see you are going thru a "dry run" of the set up of your tent! I would agree with oaklief. From my experience what you have left-over could be for the rain fly. Is there mesh at the top of the tent or nylon? If it's mesh, then you are missing a rain fly piece. You can remedy this by getting a small piece of nylon with 4 gromet holes from most boating supply places. Use the cords to attach the nylon to the tent. Make a measurement with lots of overhang. If this doesn't seem to help, send me a couple of digital photos of the tent and the left-over pieces and I'll try to assist further.

All the best,
Tim

These are four pegs and nylon ropes like you used to get with A-frame tents.

Debby