I’ve worked with this monstrosity, it’s not unlike other mainframe operating systems like IMB’s “System i”
I believe there’s still developers out there working on modern versions of it
https://www.rocketsoftware.com/sites/default/files/2025-09/universe-feature-release-matrix.pdf
The whole OS is essentially a really big nosql database, the filesystems are journaled and you have “files” but you also have dynamic files called “print queues” and executables are “jobs” that run queries and output into queues.
I know at least two of the major hotel chains use them still in their core network.









Generally speaking, people tend to pick teams or athletes you can relate to … In my case for example, I chose to cheer for Sir Lewis Hamilton in the F1 series, even tho I’ve only ever visited Britain, I learnt about his career and his “rag to riches” story and all that his parents sacrificed for him to become the champ resonated with me.