Search queries can be specified one of two ways: either using the
syntax of the engine responsible for the group you're searching, or
using Gnus' generalized search syntax. Set the option
-@code{gnus-search-use-parsed-queries} to a non-@code{nil} value to used the
+@code{gnus-search-use-parsed-queries} to a non-@code{nil} value to use the
generalized syntax. The advantage of this syntax is that, if you have
multiple backends indexed by different engines, you don't need to
remember which one you're searching---it's also possible to issue the