Unicode: Computer UI Icons 🗑
[see Unicode Geometric Shapes ■]
[see Office Emoji 📌]
Unicode Keyboard Symbols ⌘ ⏎ ⌫
Character Representation, ASCII Non-Printable Symbols ␀
ASCII Characters ␀ ␣ ¶
Unicode Arrows → ⇒ ⇄ ↻
It's interesting to note that the web standard org W3C, back in 1996, made a proposal for many HTML entities to represent many computer icons. See: W3C Proposed Icons for Internet before Unicode.
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