This function lets the user import an Excel file's tabs into a list
importxlsx(file)String. Excel's name
Other Tools: autoline,
bindfiles, bring_api,
db_download, db_upload,
export_plot, export_results,
get_credentials,
get_currency,
h2o_predict_API,
h2o_predict_MOJO,
h2o_predict_binary,
h2o_predict_model,
h2o_selectmodel, h2o_update,
haveInternet, ip_country,
iter_seeds, json2vector,
listfiles, mailSend,
matrixwd, msplit,
myip, pass,
quiet, read.file,
statusbar, try_require,
updateLares, zerovar