
    (No. 6775
    Xerox Corporation, Claimant, vs. State of Illinois, Department of Mental Health, Respondent.
    
      Opinion filed August 17, 1972.
    
    William P. Baumler, Attorney for Claimant.
    William J. Scott, Attorney General; Saul R. Wexler, Assistant Attorney General, for Respondent.
   Perlin, C.J.  