↩ 🔵 🔵 🔵 ❪✺_ₛₛ❫ Physical Subsets ○ ❪✺_ₜₛ₀❫ Typeset Portals ○ ❪✺_ₜₛ❫ Astronomical Typesets ○ ❪✺_ₜₛ❫ Electromagnetic Typesets ○ ❪✺_ₜₛ❫ Mechanical Typesets ○ ❪𝛿’❫ Physical Dimensions ○