This is a remixable version of Windows. If people have separate remixes, they are called operating systems, and people can remix them to anything related to that remix. People may choose one, and the original one is added to the studio for everyone to see. More information here - https://scratch.mit.edu/projects/723484427/ It starts at the boot, then you can remix to add anything you'd like to add.
ok uhh the flag is the windows longhorn one that's all?????