diff --git a/MIT/sqrt.scm b/MIT/sqrt.scm
deleted file mode 100644
index 1bccffa..0000000
--- a/MIT/sqrt.scm
+++ /dev/null
@@ -1,14 +0,0 @@
-(define (sqrt x)
-  (define tolerance 0.00001)
-  (define (good-enough? y)
-    (< (abs (- (* y y) x)) tolerance))
-  (define (improve y)
-    (average (/ x y) y))
-  (define (try y)
-    (if (good-enough? y)
-	y
-	(try (improve y))))
-  (try 1))
-(sqrt 13)
-    
-    
diff --git a/Structure/test.scm b/Structure/test.scm
deleted file mode 100644
index 2869d81..0000000
--- a/Structure/test.scm
+++ /dev/null
@@ -1 +0,0 @@
-(define add2(+ 2))
diff --git a/fixum/hello.scm b/fixum/hello.scm
new file mode 100644
index 0000000..0b4fa1a
--- /dev/null
+++ b/fixum/hello.scm
@@ -0,0 +1,6 @@
+; The first program
+
+
+(begin
+  (display "Hello, World!")
+  (newline))
diff --git a/tortoise/tortoise b/tortoise/tortoise
index 6932034..9e9a088 100755
Binary files a/tortoise/tortoise and b/tortoise/tortoise differ