There are several "special" characters commonly used when dealing with Mac systems. The most obvious is the "cloverleaf" character, "⌘", which is used for keyboard shortcuts (such as "⌘Q" to quit an application.
This is a list of them, along with the codes needed to use them in web pages (like I did above.)
Image | SGML Entity | Notes | ||
Rendered | Hex | Decimal | ||
⇧ | ⇧ | ⇧ | Shift | |
⇪ | ⇪ | ⇫ | Caps Lock | |
⌘ | ⌘ | ⌘ | Command (aka "Cloverleaf", or "Open Apple") | |
⌚ | ⌚ | ⌚ | Watch | |
⌥ | ⌥ | ⌥ | Option | |
⌦ | ⌦ | ⌦ | Delete (delete to the right) | |
⌫ | ⌫ | ⌫ | Backspace (delete to the left) | |
⎋ | ⎋ | ⎋ | Power | |
⏏ | ⏏ | ⏏ | Eject | |
▶ | ▶ | ▶ | Disclosure triangle, closed, large | |
▸ | ▸ | ▸ | Disclosure triangle, closed, small | |
▼ | ▼ | ▼ | Disclosure triangle, open, large | |
▾ | ▾ | ▾ | Disclosure triangle, open, small | |
|  |  | Apple (closed apple) |
If you know of any which I've missed, which logically belong here, please let me know and I'll add them.