The argument @var{error-symbol} must be an @dfn{error symbol}---a symbol
defined with @code{define-error}. This is how Emacs Lisp classifies different
-sorts of errors. @xref{Error Symbols}, for a description of error symbols,
+sorts of errors. @xref{Error Symbols}, for a description of error symbols,
error conditions and condition names.
If the error is not handled, the two arguments are used in printing