diff --git a/interp.js b/interp.js
index 8d4e773ac69bc2bf6994cb9943cb341a392b422e..ab8797f284b006db9e2abd6c8c284959d31dfeb0 100644
--- a/interp.js
+++ b/interp.js
@@ -353,9 +353,7 @@ function run_trm(t) {
 
 function run_program(program) {
   log_reset();
-  for (var i = 0; i < program.length; i++) {
-    run_trm_wrap(0, program[i]);
-  }
+  run_trm_wrap(0, program);
 }
 
 //----------------demo---------------
@@ -394,9 +392,7 @@ var parse = function (source) {
     return transform(ast);
 }
 
-var trm1 = parse("((1972 / 29) / 2) + 8");
-
-var program = [trm1];
+var program;
 
 
 //----------------reporting---------------
diff --git a/navig.js b/navig.js
index c73977f0f0cdc7ded6564f0039fa95553bf99fc3..2825d3cbdee9c41244cbaa39894a2b697d5d611c 100644
--- a/navig.js
+++ b/navig.js
@@ -425,11 +425,6 @@ function run() {
 }
 
 
-// Note: for the demo
-run();
-stepTo(78);
-
-
 
 /* demo
 var j = jsheap_of_heap(heap);