The Ideographic Symbols and Punctuation block spans U+16FE0–U+16FFF, 32 codepoints in Plane 1 (Supplementary Multilingual Plane). 7 are assigned in Unicode 16.0; the other 25 are reserved for future characters.

By script: Han (4), Tangut (1), Nushu (1), Khitan Small Script (1).

By general category: 3 modifier letters (Lm), 2 spacing marks (Mc), 1 other punctuation (Po), 1 non-spacing marks (Mn).

The first 1 arrived in Unicode 9.0 (2016); later additions came in 10.0 (1), 12.0 (2), 13.0 (3).

7 characters are East Asian Wide or Fullwidth and take two columns in terminals.

Most characters here are combining marks. See combining diacritical marks.

Because it lies outside the BMP, every character here takes four bytes in UTF-8 and a surrogate pair in UTF-16.