--- a/tests/test-topic.t	Sat Sep 01 14:00:41 2018 +0200
+++ b/tests/test-topic.t	Mon Sep 03 16:29:02 2018 +0200
@@ -40,8 +40,10 @@
   your current topic.
   
   Topic is offering you aliases reference to changeset in your current topic
-  stack as 't#'. For example, 't1' refers to the root of your stack, 't2' to the
-  second commits, etc. The 'hg stack' command show these number.
+  stack as 't#'. For example, 's1' refers to the root of your stack, 's2' to the
+  second commits, etc. The 'hg stack' command show these number. 's0' can be
+  used to refer to the parent of the topic root. Updating using 'hg up s0' will
+  keep the topic active.
   
   Push behavior will change a bit with topic. When pushing to a publishing
   repository the changesets will turn public and the topic data on them will
@@ -791,7 +793,7 @@
   $ hg topics
      fran (1 changesets)
 
-Testing for updating to t0
+Testing for updating to s0
 ==========================
 
   $ hg up fran
@@ -803,7 +805,7 @@
   t1@ start on fran (current)
   t0^ Add file delta (base)
 
-  $ hg up t0
+  $ hg up s0
   preserving the current topic 'fran'
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved