cue: implementation of marked defaults

Change-Id: I7b0ed2b1e372a71410cbd05253ca819f08509a2a
diff --git a/doc/tutorial/basics/templates.md b/doc/tutorial/basics/templates.md
index 3748cdb..bd40c2a 100644
--- a/doc/tutorial/basics/templates.md
+++ b/doc/tutorial/basics/templates.md
@@ -18,7 +18,7 @@
 // The name of each element is bound to Name and visible in the struct.
 job <Name>: {
     name:     Name
-    replicas: 1 | uint
+    replicas: uint | *1
     command:  string
 }