- ❪✺₁ᵢ❫ Operating System Classes ○
- ❪✺₃ᵢ❫ Operating System Particulars ○
- ❪✺₄ᵢ❫ Operating System Sets ○
- ❪✺_ᵢ❫ Operating System Subs ○
- ❪✺ᵢ₍₀₎❫ Operating System Corridors ○
- ❪✺ᵢ₀❫ Operating System Portals ○
- Clipboard ○
- Focus ○
- Inter-Process Communication (IPC) ○
- Privilege ○
- Sandbox ○ᴼˢ
- Scheduling ○
- Superuser ○