diff -r dd89ed2bb77e -r 71a3aa0349c5 hgext/evolve.py
--- a/hgext/evolve.py	Fri Jun 26 00:05:37 2015 -0700
+++ b/hgext/evolve.py	Thu Jun 25 09:53:53 2015 -0700
@@ -2609,9 +2609,8 @@
 def fold(ui, repo, *revs, **opts):
     """fold multiple revisions into a single one
 
-    Folds a set of revisions with the parent of the working directory.
-    All revisions linearly between the given revisions and the parent
-    of the working directory will also be folded.
+    By default, folds all the revisions linearly between the given revisions
+    and the parent of the working directory.
 
     Use --exact for folding only the specified revisions while ignoring the
     parent of the working directory. In this case, the given revisions must
@@ -2636,6 +2635,10 @@
 
          hg fold 3:6
 
+     - Fold revisions 3 and 4:
+
+        hg fold "3 + 4" --exact
+
      - Only fold revisions linearly between foo and @::
 
          hg fold foo::@ --exact