The worst version control software known to man.
It is a bloated IBM tool from the 90s, takes 10 minutes copy a repo that would take git 5 seconds. It has a lock modify unlock paradigm, so if your coworker forgets about a file they were working on and they get promoted, you can forget about working on your project ever again.
The paradigms are backwards. The project doesn’t branch, the files do. You make your commits before you do any work.
It’s slowly being phased out at my company, but it can’t seem to die fast enough. A lot of people have built their careers on this tool so it’s hard to kill.