AST Format 
==========

## Literals

### Singletons

Format:

~~~
(true)
"TRUE"

(false)
"FALSE"

(null)
"NULL"


AST Format 
==========

## Literals

### Singletons

Format:

~~~
(true)
"TRUE"

(false)
"FALSE"

(null)
"NULL"
~~~


### String

~~~
(string "foo")
"'foo'"

# Quoted delimiter
(string "fo'o")
"'fo''o'"
~~~

Add definition of string literals
Add definition of string literals
