1.12 Symbols

’id

(quote id)

A quoted id is a symbol. A symbol is a constant, like 0 and empty.

Normally, a symbol is written with a ', like 'apple, but it can also be written with quote, like (quote apple).

The id for a symbol is a sequence of characters not including a space or one of the following:

   " , ' ` ( ) [ ] { } | ; #