PS: Being able to wipe the whiteboard is essential to me, especially now that BBB whiteboard is draggy and the annotations persist across slides. Super annoying. Poor Canvas Panda Bot was unable to help. After getting my hopes up by claiming there was a delete tool on the Options Menu to erase all users' marks, I told Panda Bot there was in fact none . . . and it amicably agreed! Friendly bot. I've tried BigBlueButton help, of course, but the latest pages show no "undo all" control anymore. An older BBB page confirmed where I used to do this for the past several years: "Once multi-user whiteboard is turned off, the presenter can clear all whiteboard marks with the clear all annotations option." Alas, the big ole "undo all" trash can icon that once lived just below the "undo last" backward arrow is no longer there. No mention at all on the newer BBB page.
