IBM OS2 2.0 Pre-release Evaluation Copy Level 6F.167
Released on 10/16/1991 by IBM
For 386 or higher IBM compatibles

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The 6.167 Pre-release was created primarily for the 1991 fall Comdex.  
It was the first to include the Workplace Shell, and supported VDMs, 
full-screen Win-OS/2, and included Boot Manager.