--- a/+util/ReplaceableString.m	Mon Sep 10 16:19:16 2018 +0200
+++ b/+util/ReplaceableString.m	Thu Nov 15 16:36:21 2018 -0800
@@ -34,10 +34,20 @@
             obj.display();
         end
 
+        function show(obj, varargin)
+            obj.param = varargin;
+            obj.display();
+        end
+
+        function remove(obj)
+            obj.update('');
+        end
+
         function display(obj)
             reverseStr = repmat(sprintf('\b'), 1, obj.n);
-            newStr = padStr(sprintf(obj.fmt, obj.param{:}),obj.n);
-            fprintf([reverseStr, newStr]);
+            cleareStr = repmat(sprintf(' '), 1, obj.n);
+            newStr = sprintf(obj.fmt, obj.param{:});
+            fprintf([reverseStr, cleareStr, reverseStr, newStr]);
 
             obj.n = length(newStr);
         end