; A macro is essentially a function that generates code. I would have 
; liked the first example of a macro to be something simpler, but fn
; is the one we need first. So I'll introduce macros using a simpler 
; macro that isn't part of Bel, then explain fn.
; Here is a very simple macro:
(mac nilwith (x)
  (list 'cons nil x))

(\h \e \l \l \o)
; can also be represented as
"hello"

; The symbol nil represents falsity as well as the empty list.
; The symbol t is the default representation for truth, but any object other than nil also counts as true. 

(fn (x) (+ x 1))

(+ 1 2)

; here is a list of a, b, and c:
(a . (b . (c . nil)))
; can be written as
(a b c)

\p
; Characters that aren't letters may have longer names. For example the bell character, after which Bel is named, is
\bel

foo

(foo . bar)

; A comment

; A comment