↩ 🔵 🔵 🔵 ❪✺₄❫ Sets ○ ❪✺_❫ Subs ○ ❪✺_ₛₛ₀❫ Subset Portals ○ ❪✺_ₜₛ❫ Typesets ○ ❪✺_ₛₛ-❫ Floating Subsets ○