The Vertical Forms block spans U+FE10–U+FE1F, 16 codepoints in Plane 0 (Basic Multilingual Plane). 10 are assigned in Unicode 16.0; the other 6 are reserved for future characters.
All of its characters have the script value Common: they are shared across writing systems rather than tied to one.
By general category: 8 other punctuation (Po), 1 opening brackets (Ps), 1 closing brackets (Pe).
The first 10 arrived in Unicode 4.1 (2005).
10 characters here have compatibility decompositions: they are formatting variants of other characters and are replaced by them under NFKC and NFKD. See normalization.
10 characters are East Asian Wide or Fullwidth and take two columns in terminals.