Rear Cargo Mat Question(s)

Excuse me for this (semi-dumb) question ....
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The OEM Cargo Mat in my VX has two square open 'cut outs' .......
they line up over screws under the cargo area carpet ......
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note: these 'cutouts' are not to be confused with the cuts in the cargo mat that line up over the hooks in the cargo floor .....
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What are the screws for ......... child seat tethers ?
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Do all the cargo mats have these open cut outs ?
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Has anyone found a suitable plastic cargo liner that can be adapted (well) to the VX ? - with the rear seats up and/or folded ? I frequently haul small shrubs, etc. and a plastic cargo liner with a lip around the outside would be a nice addition ......

I believe your right about the child restraint device tether. I have the tether hardware in a plastic bag that has a digram showing it bolted to the cargo floor.
As for the cargo liner I dont know. I either turn the cargo mat over to the rubbery side so it will clean easer or if the load is really messy I have a reciever hitch basket.

carlymac:
Thanks for the reply. I may need to look into the factory tether straps - for my litttle one at least - he is still in a 'full' child seat.
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Does your cargo mat have the open squares cut out of it ? I have no idea why there are not slits cut into the cover - instead of the cut outs. I need to get a mat that does not have the openings ......... or something. Plus, I will need to locate something to cover the entire floor when the seats are folded up.
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ssshhh ..... many on this site are asking about superchargers etc .... and I'm into child seats ........ oh well ..........
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t2p