Arabic Extended-C

• Define and test rendering for right-to-left scripts and ligatures in the Arabic Extended-C range.
• Validate font fallbacks to ensure glyphs exist for all needed code points.
• Document any diacritic or contextual forms that appear in your UI and adjust spacing accordingly.
• Use semantic markup and accessible text for characters that may appear as symbols or punctuation.
• Audit color contrast and hover/selection states for characters that resemble punctuation or math signs to avoid ambiguity.

The Arabic Extended-C block contains historic and extension characters used to support various Arabic-style scripts. It is primarily presented in right-to-left environments and benefits from careful font choice and shaping rules. When designing content, consider how these code points interact with combining marks and UI containers.

Typical usage includes rendering isolated glyphs, punctuation, numerals, and occasional sign symbols. Pitfalls include inconsistent glyph availability across fonts, ambiguous rendering in mixed-direction layouts, and confusion from visually similar symbols. Historically, this block expanded the set of Arabic-related symbols to support broader linguistic and cultural contexts; it sits alongside other blocks such as Geometric Shapes and Arrows that you may reference for layout and fallback decisions. It also relates to Currency Symbols and Box Drawing for UI composition decisions.