The plastic slider is the key. The slider goes between the tent and the peg, with the loop formed by the slider going around the peg. The slider works because of friction, and can be adjusted easily up and down. It's ahrd to explain without a visual. See if you can get pics of your particular tent (or any other for that matter) already set up.
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It's not that life is so short, it's that you're dead for so long.