isaacs/npm — pull request #3097 by stuartpb (2013-01-26 00:17:20+00:00)
Title: Fix documentation for default prefix

The documentation as it stands says the default for `prefix` is process.installPrefix, a variable that doesn't even exist today. The "prefix Configuration" section of folders(1) does a pretty good job of explaining it, so I've kicked the explanation over to that.