
    (No. 5828
    Xerox Corporation, Claimant, vs. State of Illinois, Various State Agencies, Respondent.
    
      Opinion filed May 11, 1971.
    
    Xerox Corporation, Claimant, pro se.
    William J. Scott, Attorney General; Saul R. Wexler, Assistant Attorney General, for Respondent.
   Perlin, C.J.  