Tag Latin Small Letter F (U+E0066) is an invisible character from the Unicode Tags block used to build emoji tag sequences. It encodes the ASCII letter "f" within an emoji context rather than acting as a standalone symbol. In practice, it is used only as part of a larger sequence that follows a base emojiβmost notably the Black Flag (U+1F3F4)βand is terminated by the Cancel Tag character (U+E007F). Rendering engines typically hide tag characters; when a supported sequence is recognized, the combined emoji may change appearance, and when unsupported, the tags are ignored. On Apple platforms, this tag character does not display by itself; iOS and macOS recognize a limited set of black-flag tag sequences (such as those for England, Scotland, and Wales), otherwise falling back to a plain black flag or ignoring the tag content.
Tag Latin Small Letter F can appear in theoretically valid BCP 47βstyle subtags inside emoji tag sequences, but real-world support beyond specific subdivision flags is minimal across vendors. Developers should treat it as an invisible component that can be filtered or stripped by text processors, copy/paste pipelines, or messaging apps. Out of context, some platforms may show a missing glyph box, but most modern systems render it as completely invisible with no width. To construct a sequence, place a base emoji (e.g., U+1F3F4), then a run of Tag characters like U+E0066 for βf,β and finish with U+E007F to ensure correct parsing. It is distinct from Regional Indicator Symbols and Variation Selectors, and it does not affect skin tone or presentation style; its role is limited to encoding the lowercase "f" within emoji tag sequences.
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Emoji History The emoji code/ image log of changes.
