Private Use Area (Unicode)
⸺ by Charles Iliya Krempeaux
A private-use-area is a range of s that are intentionally not assigned any characters and are left unassigned so that applications can use them for their own custom s for their own custom characters.
Unicode currently has these three separate contiguous private‐use‐areas:
┏━━━━━━━━━━┳━━━━━━━━━━┳━━━━━━━━━━━━━━━━┓ ┃ Start ┃ End ┃ Num Unassigned ┃ ┡━━━━━━━━━━╇━━━━━━━━━━╇━━━━━━━━━━━━━━━━┩ │ U+E000 │ U+F8FF │ 6,400 │ │ U+F0000 │ U+FFFFD │ 65,534 │ │ U+100000 │ U+10FFFD │ 65,534 │ └──────────┴──────────┴────────────────┘
A unicode private‐use‐area is similar in idea to the computer-terminal (DRCS).