match one expression. Note that it doesn't make sense to say "index and
SandBox", since no page can match both expressions.
+If you want to include only one level of subpages, you can use
+
+ blog/* and !blog/*/*
+
More complex expressions can also be created, by using parentheses for
grouping. For example, to match pages in a blog that are tagged with either
of two tags, use: