1 114 112 code points in 17 planes: 159 866 characters, 137 468 private, 814 730 free
Built as a memo rather than a table: the thing worth hanging it up for reads across the room, with the full reference in smaller type below it.
Three sizes in one archive — from a sheet on the fridge to a poster on the wall.
Every column is the same height: a plane is always 65,536 code points. Only the fill differs — what is already in it.
The two highest planes are filled to the last code point — and not one of the 131 068 means anything. They are private use: code points "whose interpretations are not specified in those standards and whose use may be determined by private agreement among cooperating users".
Together with the private area of the BMP that comes to 137 468 code points — against 159 866 real characters. That is 46 % of everything Unicode has assigned, assigned to what the standard itself does not interpret.
Why the numbers can be trusted. Every countable number here is computed from data rather than typed in, and the sheet must pass 8 independent checks before it is allowed to build — how many items there are, the order they come in, and the claim in the highlighted box itself. If one fails, there is no file.
ten tasks, the year of each, the system, the figure — and the human it was measured against
all 128 positions: the column is the three high bits, the row is the four low ones
who published each standard, when, what it does to the sound, and how many bits per second it allows
forty bits to a quantum: five bytes, eight characters and five padding cases