My iMac has a ton of files with .xyz extension, in Library/Library, as large as 289 MB. can I delete them?
What are they?
As far as I know, this is not a system extension, but belongs to graphing or math programs. (Also, note, the three letter denotation/abbreviation is .xyz.) I believe that it is somewhat safe to delete these files. :) Let me know if you need any more help.