How to roll up roller blinds?

I've been wondering these for years. I keep pulling it down and hopefully getting lucky that it some how goes up. But is there a trick like normal blinds with strings where you pull it on the side and it goes down? These blinds are pretty long and old, and I was going to try to pull them all the way back until there is none left and try pulling it to roll them up (I believe that's how it goes) So yeah

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Roller Blinds|Blinds