notcurses/doc/proposed-terminfo.md

Some desirable terminfo capabilities

Semigraphics

blocks

The blocks capability indicates that block characters are drawn by the terminal itself, rather than through rendering the current font. This should cover at least:

• The entirety of the Block Elements block (U+2580–U+259F).
• The entirety of the Geometric Shapes block (U+25A0–U+25FF).
• The Symbols for Legacy Computing block from U+1FB00 through U+1FBAF, except U+1FB70–U+1FB7F.

boxes

The boxes capability indicates that box characters are drawn by the terminal itself, rather than through rendering the current font. This should cover at least:

• The entirety of the Box Drawing block (U+2500–U+257F).
• Symbols U+1FB70–U+1FB7F from the Symbols for Legacy Computing block.