original_query: What was the focus of HCR Corporation's work?
query: What was the focus of HCR Corporation's work?
answer: HCR Corporation initially focused on information technology consulting and contract programming.  Later, it shifted its focus to Unix operating system software, particularly porting Unix to new hardware platforms, developing compilers, and providing consulting services.  In the mid-1980s, it attempted to develop business applications software, but ultimately returned its focus to system software and development tools before its acquisition by SCO.