Block Sextant-146

They show which parts of the tile are filled.

A tile divides a text character's space into two columns and three rows. Unicode's 2019 proposal named the family “sextants,” by analogy with four-part “quadrants,” to keep older computer graphics usable.

Britain's TV teletext service began in the early 1970s; its 1976 specification listed 64 patterns for broadcast text and simple graphics. France's Minitel, an online service accessed through dedicated terminals, also used two-by-three cells from the early 1980s through 2012. Teletext could join the cells or leave narrow gaps.