Technically, Segoe MDL2 Assets is a "symbol font." Unlike a standard typeface where keys correspond to letters (pressing 'A' produces the letter A), in a symbol font, keys correspond to vector glyphs. Each icon—be it a hamburger menu, a battery indicator, or a settings gear—is mapped to a specific Unicode code point in the Private Use Area (PUA) of the Unicode standard.
<span style="font-family: 'Segoe MDL2 Assets'; font-size: 24px;"></span> segoe mdl2
Microsoft provides an official (XLSX/PDF) with over 1,000 icons. Common lookup methods: Technically, Segoe MDL2 Assets is a "symbol font
💡 : When designing for the web or cross-platform, check the Microsoft Design documentation for the latest character maps and licensing restrictions regarding the use of these fonts outside of Windows. If you're working on a specific project, I can help you: Common lookup methods: 💡 : When designing for