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This web site contains sexually explicit material:SymbolMT (often labeled simply as "Symbol") is a standard typeface used primarily for mathematical signs, Greek letters, and bullet points in digital documents. While it is typically pre-installed on Windows systems as part of Microsoft Office, users on other platforms like macOS often need to download or troubleshoot it to ensure documents display correctly. Download and Sources
Thus, when you open an old .doc file created in Word 97 or 2003 containing equations, Word will attempt to use SymbolMT Normal. If the font is missing, you will see a "Missing font" warning, and the equations may appear as empty squares or random symbols.
Logical Symbols: Therefore (∴), exists (∃), and for all (∀).
Because SymbolMT Normal is part of legacy Office components, the safest way to obtain it is to install the Microsoft Equation Editor feature from an official Office installer.