proc sort3 . a b c .
   if a > c
      swap a c
   .
   if b > c
      swap b c
   .
   if a > b
      swap a b
   .
.
x = 77444
y = -12
z = 0
sort3 x y z
print x & " " & y & " " & z
# 
proc sort3str . a$ b$ c$ .
   if strcmp a$ c$ > 0
      swap a$ c$
   .
   if strcmp b$ c$ > 0
      swap b$ c$
   .
   if strcmp a$ b$ > 0
      swap a$ b$
   .
.
x$ = "lions, tigers, and"
y$ = "bears, oh my!"
z$ = "(from the \"Wizard of OZ\")"
sort3str x$ y$ z$
print x$
print y$
print z$
