( BASIC ATOM TESTS )
10
"hi"
nil
t
The variable x is unbound.
( LET TESTS )
10
(10 20)
10 
100 
110 
110
( DEFUN TESTS )
xprint
f
g
h
1 
F 
G 
2 
F 
2 
2
( COND TESTS )
xeq
nil
1
10
z
z
40 
40

( ADVANCED TESTS )
xnull
add1
xlength
3
2