Unlike a standard text font that maps letters to letters (A=U+0041), this font uses a special encoding that maps standard keyboard keys to mathematical, scientific, and Greek characters.
“Symbol Mt Normal” is the standard Symbol font (often just called “Symbol”) from Monotype Typography . The “MT” in the name stands for Monotype, distinguishing it from other generic symbol fonts.
It doesn’t have the elegance of Garamond or the personality of Comic Sans. It looks clinical. But don’t let the plain name fool you. This font is one of the most quietly important tools in both legacy computing and modern technical documentation.