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-rw-r--r--doc/pagespec.mdwn6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/pagespec.mdwn b/doc/pagespec.mdwn
index e004de4af..5c6433ed3 100644
--- a/doc/pagespec.mdwn
+++ b/doc/pagespec.mdwn
@@ -41,6 +41,12 @@ and were written in 2005:
blog/* and link(music) and creation_year(2005)
+Note the use of "and" in the above example, that means that only pages that
+match each of the three expressions match the whole. Use "and" when you
+want to combine expression like that; "or" when it's enough for a page to
+match one expression. Note that it doesn't make sense to say "index and
+SandBox", since no page can match both expressions.
+
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: