diff -r 08375ca3874e -r b4f5714485e1 progs/detokenise.scala
--- a/progs/detokenise.scala	Tue Oct 01 23:49:39 2019 +0100
+++ b/progs/detokenise.scala	Wed Oct 02 02:09:48 2019 +0100
@@ -1,8 +1,13 @@
-// A simple lexer inspired by work of Sulzmann & Lu
-//==================================================
+// Detokenising the ouput of Tokeniser
+//=====================================
+//
+// call with 
+//
+//     scala detokenise.scala fib.tks
+//
+//     scala detokenise.scala loops.tks
 
-
-object Delexer {
+object Detokenise {
 
 import java.io._
 
@@ -24,7 +29,9 @@
 }
 
 def main(args: Array[String]) = {
-  println("TEST\n" ++ deserialise[List[Token]]("/tmp/nflx").mkString)  
+  val fname = args(0)
+  val tks = deserialise[List[Token]](fname)
+  println(s"Reading back from ${fname}:\n${tks.mkString("\n")}")  
 }