Deencode: Reverse engineer encoding errors
My first name is Clément. Throughout my life, I've encountered my fair share of bad printings of my name because of bad encoding management: the text is encoded (turned from an internal representation into a sequence of bytes) then decoded (turned from a sequence of bytes into an internal representation) using different schemes. This often leads to non-ASCII characters being mangled, replaced, or outright ignored.
For example:
The string "Clément"
└╴encoded as UTF-8 is 43 6C C3 A9 6D 65 6E 74
└╴decoded as Latin-1 / Codepage 1252 is "Clément"
Some additional reading: