I came across this code:

import sbt._ 

class AProject(info: ProjectInfo) extends DefaultProject(info) { 
  val scalaToolsSnapshots = ScalaToolsSnapshots
  val scalatest = "org.scalatest" % "scalatest" %
    "1.0.1-for-scala-2.8.0.RC1-SNAPSHOT"
}

And I'm quite confused as to what scalatest contains, and what the % does.

scala sbt
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