What is "⌘" and "⌥"?

Those 2 symbols are used on Apple keyboards.

Features different from other keyboards include:
The Command key (⌘)
The Option key (⌥)
http://en.wikipedia.org/wiki/Apple_Keyboard

So, that's why I use those 2 symbols in SmartPlaylist:
⌘ for different commands (tools)
⌥ for different options to load a list