This XSD document describes the muSR file structure of CERN/ROOT based files for LEM. In the following it will be called MusrRootLEM. It is an extension of MusrRoot.xsd and describes the additional LEM specific entries. Author: Andreas Suter, andreas.suter@psi.ch $Id: MusrRootLEM.xsd 5092 2012-03-13 07:47:00Z nemu $ The histos folder is containing potentially various subfolders. At least two subfolders, called DecayAnaModule, and SlowControlAnaModule, which holds the muSR decay histograms, must be present.