Initial data commit

Task/Animation/E/animation-2.e

@@ -0,0 +1,17 @@
+def [reverse, stop] := {
+    var text := "Hello World! "
+    var leftward := false
+
+    def anim := timer.every(100, fn _ { # milliseconds
+        def s := text.size()
+        text := if (leftward) {
+            text(1, s) + text(0, 1)
+        } else {
+            text(s - 1, s) + text(0, s - 1)
+        }
+        print("\b" * s, text)
+    })
+    print("\n", text)
+    anim.start()
+    [def _() { leftward := !leftward; null }, anim.stop]
+}