and thus use ContentService rather than HtmlService to get necessary data, use as webapp or API, all in the hopes of not having to deal with iframe cross-domain headaches for Apps Script (which has prevented a user from logging into mffer within an iframe).
and thus use ContentService rather than HtmlService to get necessary data, use as webapp or API, all in the hopes of not having to deal with iframe cross-domain headaches for Apps Script (which has prevented a user from logging into mffer within an iframe).