diff -r b528d1d3d3c3 -r 59e005dcf163 main_testing3/re_test5.scala
--- a/main_testing3/re_test5.scala	Thu Nov 02 13:53:37 2023 +0000
+++ b/main_testing3/re_test5.scala	Thu Nov 02 23:34:53 2023 +0000
@@ -1,6 +1,11 @@
-import M3._
+
+def urbanmain() = {
+
+  import M3._
 
-assert(flts(List(CHAR('a'), ZERO, ONE), Nil) == List(ZERO))
-assert(flts(List(CHAR('a'), ONE, ONE, CHAR('b')), Nil) == List(CHAR('a'), CHAR('b')))
-assert(flts(List(ONE ~ CHAR('a'), CHAR('b') ~ ONE), Nil) == List(ONE, CHAR('a'), CHAR('b'), ONE))
+  assert(flts(List(CHAR('a'), ZERO, ONE), Nil) == List(ZERO))
+  assert(flts(List(CHAR('a'), ONE, ONE, CHAR('b')), Nil) == List(CHAR('a'), CHAR('b')))
+  assert(flts(List(ONE ~ CHAR('a'), CHAR('b') ~ ONE), Nil) == List(ONE, CHAR('a'), CHAR('b'), ONE))
 
+}
+