--- a/python/moving.py	Wed Jul 13 19:14:17 2011 -0400
+++ b/python/moving.py	Thu Jul 14 17:15:09 2011 -0400
@@ -24,7 +24,10 @@
             self.last=last
 
     def __str__(self):
-        return '%d %d'%(self.first, self.last)
+        return '[{0}, {1}]'.format(self.first, self.last)
+
+    def __repr__(self):
+        return self.__str__()
 
     def empty(self):
         return self.first > self.last
@@ -51,7 +54,7 @@
         return TimeInterval(min(self.first, interval2.first), max(self.last, interval2.last))
         
     def intersection(self, interval2):
-        '''Largest interval comprising self and interval2'''
+        '''Largest interval comprised in both self and interval2'''
         return TimeInterval(max(self.first, interval2.first), min(self.last, interval2.last))