foo = FOO

print $foo
print $(foo)

# Invalid.
#
#print $
#print $()
#print $(foo bar)
#print $(foo{bar})

# Indirect.
#
FOO = foo
print $($FOO)
print $($(FOO))
print $($($FOO))

# Quoted name.
#
"b a r" = BAR
print $("b a r")
#print $"b a r"

./: