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+=====Pattern Matching=====
+Literally, any string is a pattern.  In general, though, a pattern is a
+string intended to match, or be matched by, one or more other strings.  The
+pattern will usually contain one or more wildcards, but it doesn't need to.
+The following wildcard characters are supported:
+|*   | matches zero or more characters                  |
+|%   | matches zero or more characters, except spaces   |
+|?   | matches exactly one character                    |
+Assuming we have a variable $foo set to "hello there":
+|hello*          | /* pattern matches */            |
+|hello%          | /* pattern does not match */     |
+|hello%?%        | /* pattern matches */            |
+|h?llo?th?r?     | /* pattern matches */            |
+Patterns may also contain multiple "branches".  Each branch is tested when
+a match attempt is made.  Branches are formed with the \\[ \\] construct.
+For example:
+   \\[foo bar\\]blah                 /* matches "fooblah" and "barblah" */
+The branching construct may be used anywhere that wildcards are used,
+including the various pattern matching functions, and in hook events.