𜸜 𜸜𜸚𜸟𜸤𜸜𜸝𜸢𜸜𜸚𜸟𜸤  𜸜  𜸚𜸟𜸤𜸛𜸟𜸤𜸚𜸟𜸤𜸛𜸟𜸥  𜸞𜸠𜸥𜸜 𜸜𜸛𜸟𜸤𜸛𜸟𜸥  𜸛𜸟𜸤𜸜𜸛𜸟𜸥𜸚𜸟𜸤𜸛𜸟𜸥𜸚𜸟𜸤
𜸩 𜸩𜸾𜸟𜸤𜸩𜸩𜸫𜸹𜸩 𜸧  𜸩  𜸨𜸟𜸶𜸨𜸟𜸷𜸩 𜸧𜸨𜸟    𜸩 𜸫𜸳𜸻𜸨𜸟𜹃𜸨𜸟   𜸨𜸟𜹃𜸩𜸨𜸟 𜸩  𜸨𜸟 𜸾𜸟𜸤
𜸾𜸟𜹃𜸾𜸟𜹃𜸼𜸼 𜸼𜸾𜸟𜹃  𜸽𜸟𜸥𜸼 𜸼𜸼 𜸼𜸾𜸟𜹃𜸽𜸟𜸥   𜸼  𜸼 𜸼  𜸽𜸟𜸥  𜸼  𜸼𜸽𜸟𜸥𜸾𜸟𜹃𜸽𜸟𜸥𜸾𜸟𜹃


𜸜𜸝𜸢𜸜𜸞𜸠𜸥𜸛𜸟𜸤𜸚𜸟𜸤𜸛𜸟𜸤𜸜 𜸜𜸚𜸟𜸤𜸞𜸠𜸥𜸜𜸚𜸟𜸤𜸝𜸢𜸜
𜸩𜸩𜸫𜸹 𜸩 𜸨𜸟𜸷𜸩 𜸩𜸩 𜸩𜸩 𜸩𜸩   𜸩 𜸩𜸩 𜸩𜸩𜸫𜸹
𜸼𜸼 𜸼 𜸼 𜸼 𜸼𜸾𜸟𜹃𜸽𜸟𜹃𜸾𜸟𜹃𜸾𜸟𜹃 𜸼 𜸼𜸾𜸟𜹃𜸼 𜸼

Unicode 16.0 reintroduces large type pieces to modern terminals.

Back in the 1970's, terminals were expensive high-tech pieces of equipment.
Several manufacturers competed to provide more features and justify paying
more for a terminal than we pay for a microcomputer today.
One of the high-end terminal was the Hewlett-Packard 2640 Series. It had
lot of advanced features and tricks to improve the visual quality and
flexibility, including the ability to add characters ROMs to support other
alphabets, mathematical symbols, and semigraphics.

Everybody knows the Box Drawings set of characters to create tables and UI
elements in text terminals, but HP went further, they decided to design a
64 extended characters ROM especially to display large characters.

This isn't some width or height doubling control code like the DECDHL, but
more like FIGlet, using normal-sized characters as pieces of a larger glyph.
But unlike FIGlet, the idea was to design pieces of large characters that
would fit together perfectly when composed in a grid instead of reusing
existing characters.

The large type pieces are 55 characters especially designed to be combined
together to create large text:

 U+1CE1A  𜸚 𜸛 𜸜 𜸝 𜸞 𜸟 𜸠 𜸡 𜸢 𜸣 𜸤 𜸥 𜸦 𜸧 𜸨 𜸩 𜸪 𜸫 𜸬 𜸭 𜸮 𜸯 𜸰 𜸱 𜸲 𜸳 𜸴 𜸵
           𜸶 𜸷 𜸸 𜸹 𜸺 𜸻 𜸼 𜸽 𜸾 𜸿 𜹀 𜹁 𜹂 𜹃 𜹄 𜹅 𜹆 𜹇 𜹈 𜹉 𜹊 𜹋 𜹌 𜹍 𜹎 𜹏 𜹐   U+1CE50

Because these are characters, not terminal effects, they are not limited to a
terminal. The same large type text can be used in Unicode plain-text files.
The only requirement is to use a font that includes those characters.

To display properly, you need a font with support for large type pieces.
For example:
 • ]8;;https://github.com/microsoft/cascadia-code/Microsoft Cascadia]8;;
 • ]8;;https://github.com/be5invis/Iosevka/Iosevka]8;; 28.1.0


𜸚𜸟𜸤𜸚𜸟𜸤𜸝𜸢𜸜𜸝𜸢𜸜𜸛𜸟𜸥𜸚𜸟𜸤𜸞𜸠𜸥𜸜𜸝𜸢𜸜𜸚𜸟𜸤  𜸛𜸟𜸤𜸜𜸛𜸟𜸥𜸚𜸟𜸤𜸛𜸟𜸥𜸚𜸟𜸤
𜸩  𜸩 𜸩𜸩𜸫𜸹𜸩𜸫𜸹𜸨𜸟 𜸩   𜸩 𜸩𜸩𜸫𜸹𜸩 𜸧  𜸨𜸟𜹃𜸩𜸨𜸟 𜸩  𜸨𜸟 𜸾𜸟𜸤
𜸾𜸟𜹃𜸾𜸟𜹃𜸼 𜸼𜸼 𜸼𜸽𜸟𜸥𜸾𜸟𜹃 𜸼 𜸼𜸼 𜸼𜸾𜸟𜹃  𜸼  𜸼𜸽𜸟𜸥𜸾𜸟𜹃𜸽𜸟𜸥𜸾𜸟𜹃

Each letter is usually built using a grid of 3×3 Large Type Piece characters:
 ┌─┬─┬─┐          ┌─┬─┬─┐          ┌─┬─┬─┐
 │𜸛│𜸟│𜸤│          │𜸜│ │𜸜│          │𜸝│𜸢│𜸜│
 ├─┼─┼─┤  𜸛𜸟𜸤     ├─┼─┼─┤  𜸜 𜸜     ├─┼─┼─┤  𜸝𜸢𜸜
 │𜸨│𜸟│𜸷│  𜸨𜸟𜸷     │𜸪│𜸲│𜸸│  𜸪𜸲𜸸     │𜸩│𜸫│𜸹│  𜸩𜸫𜸹
 ├─┼─┼─┤  𜸽𜸟𜹃     ├─┼─┼─┤  𜸼 𜸼     ├─┼─┼─┤  𜸼 𜸼
 │𜸽│𜸟│𜹃│          │𜸼│ │𜸼│          │𜸼│ │𜸼│
 └─┴─┴─┘          └─┴─┴─┘          └─┴─┴─┘
The number of cells used can vary to create lowercase or non-latin letters,
but the mechanism stays the same.

Each character fits precisely in its bounding box, whether it has corners,
borders, or terminating lines:
 𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧𜸚𜸟𜸤𜸛𜸟𜸤𜸚𜸟𜸤𜸬𜸦 𜸚𜸟𜸤𜸚𜸟𜸤𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧
 𜸞𜸺𜸥𜸞𜸺𜸥𜸞𜸺𜸥𜸞𜸺𜸥𜸞𜸺𜸥𜸞𜸺𜸥𜸨𜸟𜸶𜸨𜸟𜸷𜸩   𜸩 𜸚𜸟𜹃 𜸟𜸷𜸞𜸺𜸥𜸞𜸺𜸥𜸞𜸺𜸥𜸞𜸺𜸥𜸞𜸺𜸥𜸞𜸺𜸥
 𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄𜸼 𜸼𜸽𜸟𜹃𜸾𜸟𜹃𜸞𜹀𜸥𜸽𜸟𜸥𜸾𜸟𜹃𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄
To achieve this, the pieces are designed to not only connect where they
touch, but also reach the same bounding box limits when extending outward.


𜸚𜸟𜸤𜸚𜸟𜸤𜸛𜸟𜸤𜸝𜸢𜸜𜸛𜸟𜸥𜸛𜸟𜸤𜸚𜸟𜸤
𜸩  𜸩 𜸩𜸨𜸟𜸷𜸩𜸫𜸹𜸨𜸟 𜸨𜸟𜸷𜸾𜸟𜸤
𜸾𜸟𜹃𜸾𜸟𜹃𜸼 𜸼𜸼 𜸼𜸽𜸟𜸥𜸼 𜸼𜸾𜸟𜹃

Corners can be straight or bevelled/rounded. They combine with each other, as
well as with lines pieces.
 ┌─────┬───┬─────┐  𜸛𜸠𜸧𜸞𜸠𜸜𜸧     Corners from the bottom and top groups
 │ 𜸚 𜸛 │ 𜸠 │ 𜸧 𜸤 │  𜸨𜸺𜸶 𜸞𜸺𜸥     can also be used in the middle groups,
 ├─────┼───┼─────┤  𜸽𜹀𜹄𜸞𜹀𜸼𜹄     as well as used as terminating lines
 │ 𜸮 𜸨 │ 𜸺 │ 𜸶 𜸷 │  𜸨𜹍𜸶         without a connecting middle/crossbar piece:
 ├─────┼───┼─────┤  𜸚𜸠𜸤𜸞𜸠𜸜𜸧      𜸛𜸟𜸤  𜸛𜸟𜸤  𜸜       𜸚𜸟𜸤  𜸚𜸟𜸤
 │ 𜸾 𜸽 │ 𜹀 │ 𜹄 𜹃 │  𜸮𜸺𜸷 𜸞𜸺𜸥      𜸨𜸟𜸷  𜸨𜸟𜹃  𜸨𜸟𜸤     𜸩 𜸩  𜸩  
 └─────┴───┴─────┘  𜸾𜹀𜹃𜸞𜹀𜸼𜹄      𜸽𜸟𜹃  𜸼    𜸽𜸟𜹃     𜸾𜸟𜹃  𜸾𜸟𜹃

The bevelled/rounded corners design can depend on the font providing the
large type pieces. They can be bevelled/chamfered, curved/rounded, a circle
quadrant with a straight vertical stem, or any non-straight corner shape.
You should not depend on their exact design, only on their function.


𜸜  𜸜𜸝𜸢𜸜𜸛𜸟𜸥𜸚𜸟𜸤
𜸩  𜸩𜸩𜸫𜸹𜸨𜸟 𜸾𜸟𜸤
𜸽𜸟𜸥𜸼𜸼 𜸼𜸽𜸟𜸥𜸾𜸟𜹃

Lines must align on the same bounding box as corners.
To achieve this, a set of crossbars and terminating stems are provided.
Horizontal stems align precisely on the outer border of vertical lines, and
vertical stems align precisely on the outer border of horizontal lines.
      ┌───┬───┬───┐
 ┌───┐│ 𜸞 │ 𜸟 │ 𜸥 │     Termination stems are typically used on the outside
 │ 𜸜 │└───┴───┴───┘     of characters to match the bounding box of corners,
 ├───┤     𜸞𜸟𜸥          but they can also be used inside to provide a more
 │ 𜸩 │   𜸜𜸞𜸺𜸜𜸶𜸛𜸜𜸧       natural distance from lines perpendicular to them.
 ├───┤   𜸩 𜸞𜸺𜸥𜸞𜸺𜸥        𜸚𜸟𜸤  𜸚𜸟𜸤     𜸛𜸟𜸤  𜸛𜸟𜸤
 │ 𜸼 │   𜸼𜸞𜹀𜸼𜹄𜸽𜸼𜹄        𜸩𜸟𜸷  𜸩𜸞𜸷     𜸺 𜸩  𜸺𜸥𜸩
 └───┘                   𜸼𜸟𜹃  𜸼𜸞𜹃     𜸽𜸟𜹃  𜸽𜸟𜹃


𜸛𜸟𜸤𜸜𜸚𜸟𜸤𜸚𜸟𜸤𜸚𜸟𜸤𜸝𜸢𜸜𜸚𜸟𜸤𜸜  𜸚𜸟𜸤
𜸩 𜸩𜸩𜸨𜸟𜸶𜸩 𜸧𜸩 𜸩𜸩𜸫𜸹𜸨𜸟𜸶𜸩  𜸾𜸟𜸤
𜸽𜸟𜹃𜸼𜸼 𜸼𜸾𜸟𜹃𜸾𜸟𜹃𜸼 𜸼𜸼 𜸼𜸽𜸟𜸥𜸾𜸟𜹃

Diagonal pieces are a bit more complex because to achieve an angle of around
45°, they need to connect by groups of three. Several pieces are provided for
corners, cusps, and joining segments between them.

 ╌┬───────┬───────┬───────┬╌    Lines from the third group can connect
  │   𜸜 𜸜 │ 𜸦 𜸯 𜸝 │ 𜸜𜸜 𜸱↙ │     to either vertical lines up or down,
  │  𜸡𜸫𜸬𜸪 │ 𜸴 𜸲   │ 𜸸𜸻𜸢𜹂  │     or to lines of the first group vertically,
  │ ↗𜸰 𜸼𜸼 │ 𜹆 𜹁 𜸿 │ 𜸼 𜸼   │     but not horizontally.
  │       │ 𜸹 𜸳 𜸵 │       │      𜸛𜸜𜸧𜸝𜸢𜸟𜸟𜸟𜸟𜸟𜸟𜸟𜸱𜸟𜸬𜸢𜸟𜸟𜸟𜸱𜸟𜸟𜸟𜸬𜸢𜸬𜸲𜸡𜸦𜸛𜸜𜸧
 ╌┴───────┴───────┴───────┴╌     𜸞𜸺𜸥𜸩𜸫𜸲𜸢𜸬𜸢𜸟𜸬𜸴𜹂𜹁𜸻𜸫𜸲𜸡𜸴𜹂𜸲𜸡𜸴𜸻𜸫𜸻𜸟𜸰𜸩𜸞𜸺𜸥
   group 1 group 2 group 3       𜸽𜸼𜹄𜸼𜸟𜸟𜸫𜸻𜸫𜹁𜸻𜸟𜸟𜸟𜸟𜸟𜸟𜸰𜸟𜸟𜸟𜸰𜸟𜸟𜸟𜸟𜸟𜸟𜸼𜸽𜸼𜹄

The low cusp can be either aligned to the bottom of a letter using the one
from the second group 𜹁, or slightly crossing the border of a cell using the
one from the first group 𜸡. The high cusp can only be slightly crossing the
border of a cell using the one from the third group 𜹂.
When the cusp slightly crosses the border of a cell, a tiny extra
corresponding piece, 𜸱 or 𜸰, is required across that border to extend the
line a bit in the adjacent cell. These cusps also fit exactly with a vertical
crossbar or stem.
It is also possible to create a cusp by connecting lines from groups 1 and 2
horizontally, 𜸫𜸻 or 𜸬𜸢.

Note there is no straight downward line in the second group. A diagonal line
going down through the center of a cell always have the extra crossing stem.

These diagonal pieces make it possible to create proper diagonal lines:
 ┌───┐ ┌───┬───┬────┐ ┌───┐ ┌───┐ ┌───┬───┬────┐ ┌───┐ ┌───┐ ┌───┐ ┌───┬───┐
 │𜸜 𜸜│ │𜸝𜸡𜸦│𜸝𜸡𜸦│𜸝𜸢𜸬𜸦│ │𜸝𜸢𜸜│ │𜸜 𜸜│ │𜸜 𜸜│𜸜 𜸜│𜸜  𜸜│ │𜸜 𜸜│ │𜸜 𜸜│ │𜸛𜸟𜸧│ │𜸞𜸟𜸧│𜸚𜸟𜸤│
 │𜸨𜸯𜸸│ │𜸩𜸼𜸩│𜸩𜸰𜸩│𜸩𜸫𜸻𜸩│ │𜸩𜸫𜸹│ │𜸩 𜸩│ │𜸩𜸜𜸩│𜸩𜸱𜸩│𜸩𜸬𜸢𜸩│ │𜸪𜸲𜸸│ │𜸫𜸳𜸻│ │𜸬𜸴𜸻│ │ 𜸵𜸻│ 𜸵𜸻│
 │𜸼 𜸼│ │𜸼 𜸼│𜸼 𜸼│𜸼  𜸼│ │𜸼 𜸼│ │𜸫𜹁𜸻│ │𜸿𜹂𜹆│𜸿𜹂𜹆│𜸿𜸻𜸫𜹆│ │𜸼 𜸼│ │ 𜸼 │ │𜸽𜸟𜹄│ │ 𜸼 │ 𜹊 │
 └───┘ └───┴───┴────┘ └───┘ └───┘ └───┴───┴────┘ └───┘ └───┘ └───┘ └───┴───┘
(beware of tiny piece at bottom of cusp of M and at the top of the cusp of W)

Finally, a special bottom right rounded corner 𜹃 with an extra diagonal line
that provides the extra stem for the Q is a special character just for that:
 ┌───┐
 │𜸚𜸟𜸤│   This is a standalone diagonal or tail for the Q,
 │𜸩 𜸩│   it does not combine with any of the other
 │𜸾𜸟𜹅│   diagonals from the groups above.
 └───┘
The 𜹅 stem does not connect with any other piece and its design can vary
depending on the font providing the large type pieces. You should not depend
on its exact position for your large letters design, only on its function.


𜸚𜸟𜸤𜸞𜸠𜸥𜸜 𜸜𜸛𜸟𜸥𜸛𜸟𜸤  𜸜  𜸜𜸝𜸢𜸜𜸛𜸟𜸥𜸚𜸟𜸤  𜸚𜸟𜸤𜸝𜸢𜸜𜸛𜸟𜸤  𜸛𜸟𜸤𜸚𜸟𜸤𜸞𜸠𜸥𜸚𜸟𜸤
𜸩 𜸩 𜸩 𜸨𜸟𜸶𜸨𜸟 𜸨𜸟𜸷  𜸩  𜸩𜸩𜸫𜸹𜸨𜸟 𜸾𜸟𜸤  𜸨𜸟𜸶𜸩𜸫𜸹𜸩 𜸩  𜸩 𜸩𜸩 𜸩 𜸩 𜸾𜸟𜸤
𜸾𜸟𜹃 𜸼 𜸼 𜸼𜸽𜸟𜸥𜸼 𜸼  𜸽𜸟𜸥𜸼𜸼 𜸼𜸽𜸟𜸥𜸾𜸟𜹃  𜸼 𜸼𜸼 𜸼𜸽𜸟𜹃  𜸽𜸟𜹃𜸾𜸟𜹃 𜸼 𜸾𜸟𜹃

Shorter and longer vertical terminating stems are used when they shouldn't
reach the character bounding box. They can align with any of the horizontal
lines borders, or extend outside by the same length:

 𜸛𜸜𜸧𜹈𜸠𜹇𜸛𜸜𜸧𜸛𜸟𜸧𜸛𜸜𜸧𜸛𜸟𜸧𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸣𜸧↙ Top termination of square symbols.
 𜸞𜸺𜸥𜸨𜹋𜸶𜸞𜸺𜸥𜹊𜸺𜹎𜸞𜸺𜸥𜹉𜸺𜹏𜸞𜸺𜸥𜸞𜹍𜸥𜸞𜸺𜸥𜸞𜸺𜸥
 𜸽𜸼𜹄𜹌𜹀𜹐𜸽𜸼𜹄𜸽𜸟𜹄𜸽𜸼𜹄𜸽𜸟𜹄𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸭𜹄↖ Bottom termination of square symbols.

The most common ones are the last two, used for mathematical operators
heights, and dots of lowercase letters, as well as the slightly longer first
one of the second group, used as dots for ponctuation symbols:
 ┌───┐ ┌───┐ ┌───┐
 │ 𜸣 │ │ 𜸣 │ │𜸚𜸟𜸤│
 │𜸞𜸺𜸥│ │ 𜸜 │ │ 𜸵𜸻│
 │ 𜸭 │ │ 𜸼 │ │ 𜹊 │
 └───┘ └───┘ └───┘

Finally, the original Hewlett-Packard characters ROM contained some quadrants:
 𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧𜸛𜸜𜸧   Using normal and reverse video, those provided the
 𜸞▚𜸥𜸞▘𜸥𜸞▝𜸥𜸞▖𜸥𜸞▗𜸥𜸞▀𜸥𜸞▌𜸥   whole quadrants set: ▚ ▘ ▝ ▖ ▗ ▀ ▌ + ▞ ▟ ▙ ▜ ▛ ▄ ▐
 𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄𜸽𜸼𜹄
These were used as heavier dots and lines for some punctuation symbols:
 ┌───┐ ┌───┐ ┌───┐ ┌───┐
 │   │ │   │ │   │ │▚▚▚│
 │   │ │ ▘ │ │   │ │▚▚▚│
 │ ▘ │ │ ▘ │ │▀▀▀│ │▚▚▚│
 └───┘ └───┘ └───┘ └───┘
Nowadays with Unicode, all the other semigraphic characters can be used as
well.

(For those who have been counting, aside for the extra blank space character,
there was one other character to complete the original 64 characters set ROM.
Hewlett-Packard had an almost duplicate of 𜸫 that they never used.)


𜸛𜸟𜸥𜸜 𜸜𜸚𜸟𜸤𜸝𜸡𜸦𜸛𜸟𜸤𜸜  𜸛𜸟𜸥  𜸚𜸟𜸤𜸜 𜸜𜸚𜸟𜸤𜸛𜸟𜸤𜸚𜸟𜸤𜸚𜸟𜸤𜸞𜸠𜸥𜸛𜸟𜸥𜸛𜸟𜸤  𜸚𜸟𜸤𜸛𜸟𜸥𜸞𜸠𜸥
𜸨𜸟 𜸪𜸲𜸸𜸨𜸟𜸶𜸩𜸰𜸩𜸨𜸟𜹃𜸩  𜸨𜸟   𜸩  𜸨𜸟𜸶𜸨𜸟𜸶𜸨𜸟𜸷𜸨𜸟𜸶𜸩   𜸩 𜸨𜸟 𜸨𜸟𜸷  𜸾𜸟𜸤𜸨𜸟  𜸩 
𜸽𜸟𜸥𜸼 𜸼𜸼 𜸼𜸼 𜸼𜸼  𜸽𜸟𜸥𜸽𜸟𜸥  𜸾𜸟𜹃𜸼 𜸼𜸼 𜸼𜸼 𜸼𜸼 𜸼𜸾𜸟𜹃 𜸼 𜸽𜸟𜸥𜸼 𜸼  𜸾𜸟𜹃𜸽𜸟𜸥 𜸼 

As part of their documentation, Hewlett-Packard provided a table to compose
the ASCII characters using the large type pieces and quadrants:
 ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┐
 │ ␣ │ ! │ " │ # │ $ │ % │ & │ ' │ ( │ ) │ * │ + │ , │ - │ . │ / │
 │   │ 𜸜 │𜸜𜸜 │   │𜸚𜸺𜸤│𜹇 𜹇│𜸚𜸤 │ 𜸜 │ 𜸚𜸥│𜸞𜸤 │   │ 𜸣 │   │   │   │ 𜸣 │
 │   │ 𜸩 │   │𜸺𜸺 │𜸾𜸺𜸤│𜸬𜸴𜸻│𜸮𜹀𜸺│   │ 𜸩 │ 𜸩 │𜸪𜸲𜸸│𜸞𜸺𜸥│   │𜸞𜸟𜸥│   │𜸞𜸟𜸥│
 │   │ 𜹊 │   │𜸺𜸺 │𜸾𜸺𜹃│𜹐 𜹐│𜸾𜸟𜹃│   │ 𜸾𜸥│𜸞𜹃 │   │ 𜸭 │ 𜹃 │   │ ▘ │ 𜸭 │
 ├───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┤
 │ 0 │ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ : │ ; │ < │ = │ > │ ? │
 │𜸚𜸟𜸤│ 𜸦 │𜸚𜸟𜸤│𜸚𜸟𜸤│𜸜 𜸜│𜸛𜸟𜸥│𜸚𜸟𜸤│𜸞𜸟𜸧│𜸚𜸟𜸤│𜸚𜸟𜸤│   │   │ 𜸬 │   │ 𜸢 │𜸚𜸟𜸤│
 │𜸩 𜸩│ 𜸩 │𜸚𜸟𜹃│ 𜸟𜸷│𜸽𜸟𜸺│𜸽𜸟𜸤│𜸨𜸟𜸤│ 𜸵𜸻│𜸮𜸟𜸷│𜸾𜸟𜸶│ ▘ │ 𜹐 │ 𜸫 │𜸞𜸟𜸥│ 𜸻 │ 𜸵𜸻│
 │𜸾𜸟𜹃│ 𜸼 │𜸽𜸟𜸥│𜸾𜸟𜹃│  𜸼│𜸾𜸟𜹃│𜸾𜸟𜹃│ 𜸼 │𜸾𜸟𜹃│𜸾𜸟𜹃│ ▘ │ 𜹃 │   │𜸞𜸟𜸥│   │ 𜹊 │
 ├───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┤
 │ @ │ A │ B │ C │ D │ E │ F │ G │ H │ I │ J │ K │ L │ M │ N │ O │
 │𜸚𜸟𜸤│𜸚𜸟𜸤│𜸛𜸟𜸤│𜸚𜸟𜸤│𜸛𜸟𜸤│𜸛𜸟𜸥│𜸛𜸟𜸥│𜸚𜸟𜸤│𜸜 𜸜│ 𜸠 │  𜸜│𜸜 𜸜│𜸜  │𜸝𜸡𜸦│𜸝𜸢𜸜│𜸛𜸟𜸧│
 │𜸚𜸧𜸩│𜸨𜸟𜸶│𜸨𜸟𜸷│𜸩  │𜸩 𜸩│𜸨𜸟 │𜸨𜸟 │𜸩 𜸧│𜸨𜸟𜸶│ 𜸩 │  𜸩│𜸨𜸯𜸸│𜸩  │𜸩𜸰𜸩│𜸩𜸫𜸹│𜸩 𜸩│
 │𜸾𜹀𜹃│𜸼 𜸼│𜸽𜸟𜹃│𜸾𜸟𜹃│𜸽𜸟𜹃│𜸽𜸟𜸥│𜸼  │𜸾𜸟𜹃│𜸼 𜸼│ 𜹀 │𜸾𜸟𜹃│𜸼 𜸼│𜸽𜸟𜸥│𜸼 𜸼│𜸼 𜸼│𜸽𜸟𜹄│
 ├───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┤
 │ P │ Q │ R │ S │ T │ U │ V │ W │ X │ Y │ Z │ [ │ \ │ ] │ ^ │ _ │
 │𜸛𜸟𜸤│𜸚𜸟𜸤│𜸛𜸟𜸤│𜸚𜸟𜸤│𜸞𜸠𜸥│𜸜 𜸜│𜸜 𜸜│𜸜 𜸜│𜸜 𜸜│𜸜 𜸜│𜸛𜸟𜸧│ 𜸛𜸥│𜸜  │𜸞𜸧 │ 𜸱 │   │
 │𜸨𜸟𜹃│𜸩 𜸩│𜸨𜸟𜸷│𜸾𜸟𜸤│ 𜸩 │𜸩 𜸩│𜸩 𜸩│𜸩𜸱𜸩│𜸪𜸲𜸸│𜸫𜸳𜸻│𜸬𜸴𜸻│ 𜸩 │𜸫𜸲𜸢│ 𜸩 │ 𜹂 │   │
 │𜸼  │𜸾𜸟𜹅│𜸼 𜸼│𜸾𜸟𜹃│ 𜸼 │𜸾𜸟𜹃│𜸫𜹁𜸻│𜸿𜹂𜹆│𜸼 𜸼│ 𜸼 │𜸽𜸟𜹄│ 𜸽𜸥│  𜸼│𜸞𜹄 │   │▀▀▀│
 ├───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┤
 │ ` │ a │ b │ c │ d │ e │ f │ g │ h │ i │ j │ k │ l │ m │ n │ o │
 │ 𜸤 │   │𜸜  │   │ 𜸜 │   │𜸚𜸤 │   │𜸜  │ 𜸣 │ 𜸣 │𜸜  │ 𜸜 │   │   │   │
 │   │𜸚𜸧 │𜸨𜸤 │𜸚𜸥 │𜸚𜸶 │𜸚𜸤 │𜸺  │𜸚𜸧 │𜸨𜸤 │ 𜸜 │ 𜸜 │𜸨𜸷 │ 𜸩 │𜸝𜸦 │𜸛𜸤 │𜸚𜸤 │
 │   │𜸾𜹄 │𜸽𜹃 │𜸾𜸥 │𜸾𜹄 │𜸾𜸥 │𜸼  │𜸾𜸶 │𜸼𜸼 │ 𜸼 │𜸾𜹃 │𜸼𜸼 │ 𜸼 │𜸼𜸼 │𜸼𜸼 │𜸾𜹃 │
 ├───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┼───┤
 │ p │ q │ r │ s │ t │ u │ v │ w │ x │ y │ z │ { │ ¦ │ } │ ~ │ ␡ │
 │   │   │   │   │𜸣  │   │   │   │   │   │   │ 𜸚𜸥│ 𜹈 │𜸞𜸤 │   │▚▚▚│
 │𜸛𜸤 │𜸚𜸧 │𜸚𜸥 │𜸚𜸥 │𜸺  │𜸜𜸜 │𜸜𜸜 │𜸜𜸜 │𜸮𜸷 │𜸜𜸜 │𜸞𜸧 │ 𜸷 │   │ 𜸮 │𜸚𜸟𜹃│▚▚▚│
 │𜸨𜹃 │𜸾𜸶 │𜸼  │𜸞𜹃 │𜸾𜹃 │𜸽𜹄 │𜸾𜹃 │𜸿𜹆 │𜸼𜸼 │𜸾𜸶 │𜸽𜸥 │ 𜸾𜸥│ 𜹌 │𜸞𜹃 │   │▚▚▚│
 └───┴───┴───┴───┴───┴───┴───┴───┴───┴───┴───┴───┴───┴───┴───┴───┘
 (Source: HP 2641A/2645A/2645S Display Station Reference Manual, Table B-16)

This is only an example, these characters can be modernized, and the large
type pieces can be used to create other letters. Below is an example of
alternate versions of some ASCII characters:
 ┌───╥───╥───╥───╥───╥───╥───╥───╥───╥───╥──╥──╥──╥──╥───╥──╥──╥──╥──╥───┐
 │ / ║ 0 ║ 1 ║ 5 ║ ? ║ I ║ O ║ Z ║ _ ║ ` ║ a║ f║ j║ l║ m ║ r║ t║ u║ v║ | │
 │  𜸜║𜸚𜸟𜸤║𜸬𜸦 ║𜸛𜸟𜸥║𜸚𜸟𜸤║𜸞𜸠𜸥║𜸚𜸟𜸤║𜸞𜸟𜸧║   ║ 𜸢 ║  ║𜸚𜸥║ 𜸣║𜸜 ║   ║  ║𜸣 ║  ║  ║ 𜹈 │
 │𜸬𜸴𜸻║𜸩𜹋𜸩║ 𜸩 ║𜸽𜸟𜸤║ 𜸚𜹃║ 𜸩 ║𜸩 𜸩║𜸬𜸴𜸻║   ║ 𜸫 ║𜸞𜸤║𜸺𜸥║ 𜸜║𜸩 ║𜸛𜸠𜸤║𜸛𜸥║𜸺𜸥║𜸜𜸜║𜸜𜸜║ 𜸩 │
 │𜸼  ║𜸾𜸟𜹃║𜸞𜹀𜸥║𜸞𜸟𜹃║ 𜹊 ║𜸞𜹀𜸥║𜸾𜸟𜹃║𜸽𜸟𜸥║𜸞𜸟𜸥║   ║𜸾𜹄║𜸼 ║𜸞𜹃║𜸾𜸥║𜸼𜸼𜸼║𜸼 ║𜸾𜸥║𜸾𜹄║𜸫𜸻║ 𜹌 │
 └───╨───╨───╨───╨───╨───╨───╨───╨───╨───╨──╨──╨──╨──╨───╨──╨──╨──╨──╨───┘
Lowercase letters and some symbols can be further improved if 4 rows are used
instead of 3, allowing for proper descenders:
 ┌────┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐
 │  @ │ │ g│ │ j│ │ p│ │ q│ │ y│
 │𜸚𜸟𜸟𜸤│ │  │ │ 𜸣│ │  │ │  │ │  │
 │𜸩𜸚𜸧𜸩│ │𜸚𜸧│ │ 𜸧│ │𜸛𜸤│ │𜸚𜸧│ │𜸜𜸜│
 │𜸩𜸾𜹀𜹃│ │𜸾𜸶│ │ 𜸩│ │𜸨𜹃│ │𜸾𜸶│ │𜸾𜸶│
 │𜸾𜸟𜸟𜹃│ │𜸾𜹃│ │𜸾𜹃│ │𜹐 │ │ 𜹐│ │𜸾𜹃│
 └────┘ └──┘ └──┘ └──┘ └──┘ └──┘


𜸚𜸟𜸤𜸝𜸢𜸜𜸝𜸢𜸜𜸛𜸟𜸥𜸜 𜸜
𜸨𜸟𜸶𜸩𜸫𜸹𜸩𜸫𜸹𜸨𜸟 𜸪𜸲𜸸
𜸼 𜸼𜸼 𜸼𜸼 𜸼𜸽𜸟𜸥𜸼 𜸼

If you need to convert from legacy documentation that describes large
characters using their corresponding keystrokes on an original HP 2640 Series
keyboard, here is the conversion table between keys and large type pieces:
 ┌──────────────────────────────────────────────────────────────────────┐
 │ Key: ␣ ! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? │
 │ Chr:   𜸚 𜸛 𜸜 𜸝 𜸞 𜸟 𜸠 𜸡 𜸢 𜸣 𜸤 𜸥 𜸦 𜸧 𜸨 𜸩 𜸪 𜸫 𜸬 𜸭 𜸮 𜸯 𜸰 𜸫 𜸱 𜸲 𜸳 𜸴 ▚ 𜸵 𜸶 │
 ├──────────────────────────────────────────────────────────────────────┤
 │ Key: @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ │
 │ Chr: 𜸷 𜸸 𜸹 𜸺 𜸻 𜸼 𜸽 𜸾 𜸿 𜹀 𜹁 𜹂 𜹃 𜹄 𜹅 𜹆 𜹇 𜹈 𜹉 𜹊 𜹋 𜹌 𜹍 𜹎 𜹏 𜹐 ▘ ▝ ▖ ▗ ▀ ▌ │
 └──────────────────────────────────────────────────────────────────────┘
 (Based on HP 2641A/2645A/2645S Display Station Reference Manual, Figure 2-9)

Note that Unicode does not include the character orginally provided by the
key '8', but it can safely be replaced by 2:𜸫 as they are almost identical.


]8;;http://www.phm.lu/Philippe Majerus]8;;, January-February 2024