-procedure continues in that directory. If it names a file, that file
-is considered the result of the mapping (even if the rest string has
-not been exhausted yet).
+procedure continues in that directory, unless there is nothing left of
+the rest string, in which case *dirplex* responds with a HTTP 301
+redirect to the same URL, but ending with a slash. Otherwise, the
+remaining rest string begins with a slash, which is stripped off
+before continuing. If the path element names a file, that file is
+considered the result of the mapping (even if the rest string has not
+been exhausted yet).