MAIDR + PowerPoint and Word Task Pane (simulated file)

No PowerPoint or Word here. A real task pane runs inside PowerPoint or Word, which hand it the file through Office.js. This page writes a small presentation of three charts on three slides, installs a stand-in for Office.js that hands it over, and calls maidrOffice.bindOffice(element) as a task pane would from Office.onReady. Add ?host=Word to the address for a Word document of two charts instead. The buttons under The file stand for what a user does outside the pane. Build the bundles first with npm run build.