TOKENS:

:nil
:true
:false
:word
:keyword
:number
:string

:as
:cond
:do
:else
:fn
:if
:import
:let
:loop
:ref
:then
:with

:receive
:spawn
:repeat
:test
:when

:lparen
:rparen
:lbrace
:rbrace
:lbracket
:rbracket
:semicolon
:comma
:newline
:backslash
:equals
:pipeline
:rarrow
:startdict
:startstruct
:startset
:splat
:eof