https://ccm.net/forum/affich-1160828-unable-to-undo-changes-in-xodo-pdf-reader
Unable to undo changes in Xodo PDF Reader [Solved]
Best answer: Hi, To remove annotations in Xodo PDF, go to Annotations and select Clear. In case this doesn't work, it is possible to restore your PDF prior to...
xodo pdf readerunableundochangessolved