[plt-scheme] Where is resolver.ss?

Gordon Weakliem wrote:

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>The docs for PLaneT (5.4.1 in the MzScheme language manual) imply that you can load the planet resolver using (require (lib "resolver.ss" "planet")).  However, I can't find this collection, and can't the require doesn't work - are the docs incorrect, or am I reading something into them that I shouldn't? 
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If you have version 208 or higher, the planet collection should exist in 
plt/collects and that require line should succeed, though it won't do 
anything useful. The internal PLaneT implementation uses that file, but 
you should be able to use the planet require forms (e.g. the ones listed 
beside each package on http://planet.plt-scheme.org/) directly without 
having to require anything first.

-jacob