Unicode Keycap / Emoji Number Reference

These “number in a box” characters are called keycap emoji sequences. They are composed of multiple Unicode code points.

Rendered Emoji	Unicode Sequence (Inline / Encoded)
0️⃣	`U+0030 U+FE0F U+20E3`
1️⃣	`U+0031 U+FE0F U+20E3`
2️⃣	`U+0032 U+FE0F U+20E3`
3️⃣	`U+0033 U+FE0F U+20E3`
4️⃣	`U+0034 U+FE0F U+20E3`
5️⃣	`U+0035 U+FE0F U+20E3`
6️⃣	`U+0036 U+FE0F U+20E3`
7️⃣	`U+0037 U+FE0F U+20E3`
8️⃣	`U+0038 U+FE0F U+20E3`
9️⃣	`U+0039 U+FE0F U+20E3`
🔟	`U+1F51F`

Other Useful Unicode Symbols for Documentation

Rendered	Unicode
📜	`U+1F4DC`
⚠️	`U+26A0 U+FE0F`
✅	`U+2705`
❌	`U+274C`
🔧	`U+1F527`
📂	`U+1F4C2`
📚	`U+1F4DA`
🧠	`U+1F9E0`

Note: Many terminals and older vi environments will not render these correctly. For maximum compatibility in source files, use plain ASCII numbers instead.