Yes
it was great at explaining how the code worked
crackez on Hacker News
In the thread “COBOL has been “dead” for so long, my grandpa wrote about it”, replying to this comment
Helped: Analyzing existing source code and generating working COBOL interfaces.
Got in the way: Generated badly sized data members requiring manual fixes.
I've used o365 copilot to analyze a COBOL app I had source code to, and it was great at explaining how the code worked. Made writing an interface to it a breeze with some sample code and I swear I am not a COBOL person, I'm just the Linux guy trying to help a buddy out... …