and query them with @code{specifier-specs} or @code{specifier-instance}.
You will get an error if you try to set them using @code{setq}. The
valid instantiators for these specifiers are toolbar descriptors, as
-described above. @xref{Specifiers} for more information.
+described above. @xref{Specifiers}, for more information.
Most of the time, you will set @code{default-toolbar}, which allows
the user to choose where the toolbar should go.