
    (No. 6015
    International Business Machines Corporation, Claimant, vs. State of Illinois, Auditor of Public Accounts, Respondent.
    
      Opinion filed August 30, 1971.
    
    Pretzel, Stouffer, Nolan and Rooney, Attorney for Claimant.
    William J. Scott, Attorney General; Saul R. Wexler, Assistant Attorney General, for Respondent.
   Perlin, C.J.  