#' A description #' #' Long description #' @param x the object of type \code{numeric} #' @return A logical indicating whether \code{x == 0} #' @export is_zero = function (x) x == 0 #' Sum of numbers #' #' \code{sum_all} is a wrapper for \code{\link{sum}(..., na.rm = TRUE)}. #' @param ... one or more numeric vectors #' @examples
    #' sum_all(1 : 10) # 55 @this \link{should not be highlighted!}
    #' sum_all(1, NA, 2, 3) # 6
    #'
@seealso \link[base]{sum} # this SHOULD be highlighted again. # comment sum_all <- function (...) { sum(..., na.rm = TRUE) } # Weird identifier in @param string #' @param `a\`b\\` test