How it works...

SSH is a large and feature-rich program. When you manipulate how it behaves using flags, you're modifying the default behavior to your own ends.

As with any command, they can be simple:

$ ssh 192.168.33.11

But they can also be complex:

$ ssh -Y -D9999 -J buser@BASTION:22 -L 8888:127.0.0.1:80 myself@centos2 -p4433

As an exercise, using the SSH manual page if you need to, see if you can work out what this command will accomplish.