How do you enter a directory that's name is only a minus?

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http://unix.stackexchange.com – I downloaded lessn to my webserver and unzipped it. It contains a folder named -. I assumed I know how to deal with that, but I don't. I tried cd -- -, but that doesn't have the desired effect. Using quotes doesn't seem to affect it either. I put slashes all over the place, to no avail. What's the proper way to change into this folder? (HowTos)