#' @title Scan meeting subject and highlight items for review
#'
#' @description
#' This functions scans a meeting query and highlights meetings with subjects that include common exlusion terms. It is intended to be used by an analyst to validate raw data before conducting additional analysis.
#' Returns a summary in the console by default.
#' Additional option to return the underlying data with a flag of items for review.
#'
#'
#' @family Data Validation
#'
#' @param data A meeting query in the form of a data frame.
#' @param return A string specifying what to return.
#' Returns a message in the console by default, where 'text' is passed in `return`.
#' When 'table' is passed, a summary table with common terms found is printed.
#' When 'data' is passed, a the original data with an additional flag column is returned as a data frame.
#'
#' @return
#' Returns a message in the console by default, where 'text' is passed in `return`.
#' When 'table' is passed, a summary table with common terms found is printed.
#' When 'data' is passed, a the original data with an additional flag column is returned as a data frame.
#'
#' @export
subject_validate<-function(data,return="text"){
## Check inputs
required_variables<-c("Subject")
## Error message if variables are not present. Nothing happens if all present