What means
It comes from the Japanese character set for Sharp MZ computers.
The old display code assigns it byte CD (an 8-bit value) in the Japanese primary set for Sharp MZ. The MZ-80K launched in Japan in 1978; its fixed character cells could be combined into simple graphics, including game sprites like this figure. Unicode preserves such characters so old computer data can be converted both ways without losing the original.
Why might it show as a box?
A font without this glyph may show a replacement box.
Unicode identifies the character, but each font supplies its drawing. If a missing-character box appears, the stored character is still ; the box is a font fallback, not a different figure.
Don't confuse it with
4Questions people ask
1Is CD the keyboard shortcut to enter this?
No. CD is the old byte assigned to this figure in the Sharp MZ Japanese primary set; it helps decode old MZ data, but it is not a keyboard shortcut.
How to type
𜰄\1CC04Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.
