+import StdEnv
+
+import graph_copy_with_names, symbols_in_program
+import System.CommandLine
+
+test :: !{#Symbol} a -> a
+test symbols a
+ # (a, b, c) = copy_to_string_with_names a
+ # (a, r) = copy_from_string_with_names a b c symbols
+ = a
+
+polyid :: (A.a: a -> a) -> (Int, Bool)
+polyid f = (f 42, f True)