HTML Entity	Unicode Character	Glyph	Name
			Apple logo
⌘	⌘	⌘	Command, Cmd, Clover, (formerly) Apple
⌃	⌃	⌃	Control, Ctl, Ctrl
⌥	⌥	⌥	Option, Opt, (Windows) Alt
⇧	⇧	⇧	Shift
⇪	⇪	⇪	Caps lock
⏏	⏏	⏏	Eject
↩	↩	↩	Return, Leftwards arrow with hook
↵, ↵	↵	↵	Return, Downwards arrow with corner leftwards
⏎	↩	⏎	Return
⌤	⌤	⌤	Enter
⌫	⌫	⌫	Delete, Backspace
⌦	⌦	⌦	Forward Delete
⎋	⎋	⎋	Escape, Esc
→, →	→	→	Right arrow
←, ←	←	←	Left arrow
↑, ↑	↑	↑	Up arrow
↓, ↓	↓	↓	Down arrow
⇞	⇞	⇞	Page Up, PgUp
⇟	⇟	⇟	Page Down, PgDn
↖	↖	↖	Home
↘	↘	↘	End
⌧	⌧	⌧	Clear
⇥, ⇥	⇥	⇥	Tab, Tab Right, Horizontal Tab
⇤, ⇤	⇤	⇤	Shift Tab, Tab Left, Back-tab
␢, ␣	␢	␢	Space, Blank
␣	␣	␣	Space, Blank

Reference

1. The Apple Logo in Unicode
2. Where can I find the unicode symbols for Mac functional keys? (Command, Shift, etc.)
3. Unicode character tables