Comment by rbanffy
5 hours ago
One nice use for these tiny fonts is large text in terminals. Unicode now has 2x4 (from Kaypro), 2x3 (from Teletext, TRS-80), and 2x2 mosaic characters. Unicode also has 3x3 large text (from HP terminals) but font and terminal support is limited.
I assume you mean Braille is the 2x4 set. What range introduces 3x3 codepoints?
The 3x3 are the large text blocks - intended to use in 3x3 groups to form letters and numbers from the fragments in the range. There are 2x4 mosaics as well, separate from the Braille alphabet. These are symbols coming from legacy systems (such as the HP terminals and Kaypro CP/M machines).