Greek Extended

• Ensure the font you use supports Greek Extended code points to render all diacritics correctly.
• Use Unicode normalization (NFC) when processing text to keep consistency.
• Provide fallback fonts and clear line height for readability of complex diacritics.
• Test rendering across browsers and operating systems and on screen readers.
• Document diacritic rules and ensure typography respects polytonic conventions to avoid confusion.

Greek Extended covers letters and diacritics used in polytonic Greek and related scholarly forms. It sits alongside the basic Greek block and other Greek ranges in Unicode, helping editors and linguists encode accurate manuscripts without sacrificing compatibility.

In practice, use this block for technical text, philology, and linguistic examples. Watch out for combining marks stacking with base letters, font support gaps, and normalization differences. For related symbol work, you might also explore other blocks like Geometric Shapes or Currency Symbols, depending on context. Always test on target platforms to avoid misinterpretation.